Brooks Men’s Glycerin 21

$103.95

SKU: 413895 Category: Brand:

Description

Choose the Brooks Glycerin 21 and experience the perfect combination of comfort and performance while running with this neutral all-round running shoe. Whether you’re heading out for a 5km or a slightly longer endurance run; the Glycerin can do it all. The shoe is suitable for both novice and experienced runners. Experience the perfect balance between cushioning and responsiveness with this all-round running shoe! Midsole The Glycerin 21 has Brooks’ DNA LOFT v3 foam in the midsole. This foam is extremely soft and has an innovative character compared to the previous version. Nitrogen has been incorporated into the cushioning material to optimize responsiveness and cushioning. The foam has Brooks’ DNA technology, where the foam adapts to your running style. This means the shoe has a cushioning foam that ensures a smooth transition from heel to toe. To top it all off, the ORTHOLITE insole ensures comfortable entry with long-lasting cushioning. Open cells in the sole keep your feet cool while running. Upper The airmesh upper of the shoe gives your feet the comfort they deserve while running. Airmesh has a ventilating function and encloses the foot comfortably. 3D Fit Print technology was used to design the upper. This technology adds extra structure in strategic places and increases the flexibility of the upper. Recycled materials have been used to produce the upper, sustainability and comfort come together in this shoe. Outsole The shoe has a RoadTack outsole, made from a mix of rubber and recycled silica. In addition, this outsole technology from Brooks is durable and resilient to compression, making them extra long lasting. Start your running session with the Brooks Glycerin 21 and pursue your goals!

Brooks Men’s Glycerin 21

$109.95

SKU: 413791 Category: Brand:

Description

With even more nitro-infused foam than before, the Brooks Glycerin 21 returns to deliver an ultra-comfortable and smooth ride for any distance. In this update, the Glycerin 21 adds 2mm more plush and responsive DNA Loft v3 foam into the midsole, offering a little extra softness to a shoe that’s already plenty soft. As a cherry on top, the additional cushioning does not come at the expense of extra weight. On the contrary, the Glycerin 21 weighs almost an ounce less than the previous model! Bringing long-lasting traction to the party is the new RoadTack rubber that is strategically placed in the outsole to deliver the grip needed to rack up the miles. This shoe is rounded out with a new engineered warp knit upper that checks the boxes of being accommodating, secure, and breathable, which only adds to the supreme comfort the Glycerin brings to the table. Running farther has been made easier than ever thanks to the Brooks Glycerin 21––all you have to do is enjoy the ride.

Brooks Men’s Glycerin 21

$109.95

SKU: 413626 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 396255 Category: Brand:

Description

The Brooks Glycerin 21 has super-soft cushioning for supreme comfort. Now with more super-soft nitrogen-infused DNA LOFT v3 cushioning that is optimized to be lightweight, responsive, and durable for push comfort. With improved fit from the engineered warp knit upper which is breathable and allows for a flexible, accommodating fit while still soft against the foot. The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions. The new RoadTack rubber is environmentally friendly, with a recycled silica content. Other recycled materials used is equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 373252 Category: Brand:

Description

Whether you’re heading out for a 5km or a slightly longer endurance run; the Glycerin can do it all. The shoe is suitable for both novice and experienced runners. Experience a new level of running with this all-round running shoe! Midsole DNA LOFT v3 is the foam that is incorporated into the midsole of the Glycerin 21. The soft foam has an innovative character compared to the previous version of DNA LOFT. Nitrogen has been incorporated into the cushioning material to optimize responsiveness and cushioning. The foam has Brooks’ DNA technology, where the foam adapts to your running style. This means the shoe has a cushioning foam that ensures a smooth transition from heel to toe. Upper The airmesh upper of the shoe gives your feet the comfort they deserve while running. The airmesh upper provides ventilation to keep your feet cool, and this material also encloses your foot comfortably. 3D Fit Print technology was used to design the upper. This technology adds extra structure in strategic places and increases the flexibility of the upper. Recycled materials have been used to produce the upper, sustainability and comfort come together in this shoe. Wear sole The shoe has a RoadTack outsole, made from a mix of rubber and recycled silica. In addition, this outsole technology from Brooks is durable and resilient to compression, making them extra long lasting. Start your running session with the Brooks Glycerin 21 and pursue your goals!

Men’s Brooks Glycerin 21

$109.99

SKU: 351834 Category: Brand:

Description

The Men’s Brooks Glycerin 21 is designed to bring you unbeatable cushioning and support for running, walking or whatever your day brings! Now with extra goodies like the new RoadTack rubber that’s environmentally friendly, with a recycled silica content. You can also rely on more durable and lightweight traction than ever before. If that wasn’t enough, the additional 2mm of DNA LOFT v3 cushion delivers a super plush ride. Made with recycled materials equivalent to five plastic water bottles, you’ll feel great with every step you take in your Glycerin 21.

Brooks Men’s Glycerin 21

$109.95

SKU: 346872 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 226393 Category: Brand:

Description

Whether you’re training for a marathon or just enjoy a leisurely run, the Brooks Glycerin 21 is the ideal all-round running shoe for the neutral runner. Go for short or long runs; the Glycerin does it all. This makes it suitable for both beginners and experienced runners. Get the most out of every step with this all-round running shoe! Midsole The Glycerin 21 has Brooks’ DNA LOFT v3 foam in the midsole. This foam is extremely soft and has an innovative character compared to the previous version. Nitrogen has been incorporated into the cushioning material to optimize responsiveness and cushioning. The foam has Brooks’ DNA technology, where the foam adapts to your running style. This means the shoe has a cushioning foam that ensures a smooth transition from heel to toe. On top of all this, extra step-in comfort and long-lasting cushioning are provided by the ORTHOLITE insole. This air-permeable sole ensures that your feet stay cool while running. Upper The upper of this model gives your feet the comfort they deserve. The airmesh upper provides ventilation to keep your feet cool, and this material also encloses your foot comfortably. The 3D Fit Print technology adds structure to the upper and offers extra stretch in places where it is desired. Recycled materials have been used to produce the upper, sustainability and comfort come together in this shoe. Outsole The shoe has a RoadTack outsole, made from a mix of rubber and recycled silica. In addition, this outsole technology from Brooks is durable and resilient to compression, making them extra long lasting. Put on your Brooks Glycerin 21 shoes and prepare to push your limits!

Brooks Men’s Glycerin 21

$109.95

SKU: 200739 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 171442 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 167205 Category: Brand:

Description

The Brooks Glycerin 21 has super-soft cushioning for supreme comfort. Now with more super-soft nitrogen-infused DNA LOFT v3 cushioning that is optimized to be lightweight, responsive, and durable for push comfort. With improved fit from the engineered warp knit upper which is breathable and allows for a flexible, accommodating fit while still soft against the foot. The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions. The new RoadTack rubber is environmentally friendly, with a recycled silica content. Other recycled materials used is equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 136003 Category: Brand:

Description

Introducing the Brooks Glycerin 21! Featuring the revolutionary Nitrogen-infused DNA Loft v3 midsole, it offers a lightweight and ultra-responsive fit for your training needs. The engineered warp knit upper ensures maximum comfort and breathability. Step up your training game with the Glycerin 21!

Brooks Men’s Glycerin 21

$129.95

SKU: 134371 Category: Brand:

Description

Introducing the Brooks Glycerin 21! Featuring the revolutionary Nitrogen-infused DNA Loft v3 midsole, it offers a lightweight and ultra-responsive fit for your training needs. The engineered warp knit upper ensures maximum comfort and breathability. Step up your training game with the Glycerin 21!

Brooks Men’s Glycerin 21

$129.95

SKU: 134346 Category: Brand:

Description

Explore Glycerin 21 running shoes for male runners looking for supreme softness and ultimate comfort. Plush DNA LOFT v3 cushioning, flexible fit, and distinct design for unmatched runs.

Men’s Brooks Glycerin 21

$109.95

SKU: 106213 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$120.00

SKU: 104871 Category: Brand:

Description

With even more nitro-infused foam than before, the Brooks Glycerin 21 returns to deliver an ultra-comfortable and smooth ride for any distance. In this update, the Glycerin 21 adds 2mm more plush and responsive DNA Loft v3 foam into the midsole, offering a little extra softness to a shoe that’s already plenty soft. As a cherry on top, the additional cushioning does not come at the expense of extra weight. On the contrary, the Glycerin 21 weighs almost an ounce less than the previous model! Bringing long-lasting traction to the party is the new RoadTack rubber that is strategically placed in the outsole to deliver the grip needed to rack up the miles. This shoe is rounded out with a new engineered warp knit upper that checks the boxes of being accommodating, secure, and breathable, which only adds to the supreme comfort the Glycerin brings to the table. Running farther has been made easier than ever thanks to the Brooks Glycerin 21––all you have to do is enjoy the ride.

Brooks Men’s Glycerin 21

$100.91

SKU: 104742 Category: Brand:

Description

Explore Glycerin 21 running shoes for male runners looking for supreme softness and ultimate comfort. Plush DNA LOFT v3 cushioning, flexible fit, and distinct design for unmatched runs.

Brooks Men’s Glycerin 21

$109.95

SKU: 89202 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.99

SKU: 84066 Category: Brand:

Description

The Men’s Brooks Glycerin 21 is designed to bring you unbeatable cushioning and support for running, walking or whatever your day brings! Now with extra goodies like the new RoadTack rubber that’s environmentally friendly, with a recycled silica content. You can also rely on more durable and lightweight traction than ever before. If that wasn’t enough, the additional 2mm of DNA LOFT v3 cushion delivers a super plush ride. Made with recycled materials equivalent to five plastic water bottles, you’ll feel great with every step you take in your Glycerin 21.

Brooks Men’s Glycerin 21

$109.96

SKU: 83264 Category: Brand:

Description

With even more nitro-infused foam than before, the Brooks Glycerin 21 returns to deliver an ultra-comfortable and smooth ride for any distance. In this update, the Glycerin 21 adds 2mm more plush and responsive DNA Loft v3 foam into the midsole, offering a little extra softness to a shoe that’s already plenty soft. As a cherry on top, the additional cushioning does not come at the expense of extra weight. On the contrary, the Glycerin 21 weighs almost an ounce less than the previous model! Bringing long-lasting traction to the party is the new RoadTack rubber that is strategically placed in the outsole to deliver the grip needed to rack up the miles. This shoe is rounded out with a new engineered warp knit upper that checks the boxes of being accommodating, secure, and breathable, which only adds to the supreme comfort the Glycerin brings to the table. Running farther has been made easier than ever thanks to the Brooks Glycerin 21––all you have to do is enjoy the ride.

Brooks Men’s Glycerin 21

$160.00

Out of stock

SKU: 81665 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 65061 Category: Brand:

Description

The Brooks Glycerin 21 has super-soft cushioning for supreme comfort. Now with more super-soft nitrogen-infused DNA LOFT v3 cushioning that is optimized to be lightweight, responsive, and durable for push comfort. With improved fit from the engineered warp knit upper which is breathable and allows for a flexible, accommodating fit while still soft against the foot. The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions. The new RoadTack rubber is environmentally friendly, with a recycled silica content. Other recycled materials used is equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 54541 Category: Brand:

Description

The Brooks Glycerin 21 has super-soft cushioning for supreme comfort. Now with more super-soft nitrogen-infused DNA LOFT v3 cushioning that is optimized to be lightweight, responsive, and durable for push comfort. With improved fit from the engineered warp knit upper which is breathable and allows for a flexible, accommodating fit while still soft against the foot. The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions. The new RoadTack rubber is environmentally friendly, with a recycled silica content. Other recycled materials used is equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$109.95

SKU: 51190 Category: Brand:

Description

With even more nitro-infused foam than before, the Brooks Glycerin 21 returns to deliver an ultra-comfortable and smooth ride for any distance. In this update, the Glycerin 21 adds 2mm more plush and responsive DNA Loft v3 foam into the midsole, offering a little extra softness to a shoe that’s already plenty soft. As a cherry on top, the additional cushioning does not come at the expense of extra weight. On the contrary, the Glycerin 21 weighs almost an ounce less than the previous model! Bringing long-lasting traction to the party is the new RoadTack rubber that is strategically placed in the outsole to deliver the grip needed to rack up the miles. This shoe is rounded out with a new engineered warp knit upper that checks the boxes of being accommodating, secure, and breathable, which only adds to the supreme comfort the Glycerin brings to the table. Running farther has been made easier than ever thanks to the Brooks Glycerin 21––all you have to do is enjoy the ride.

Brooks Men’s Glycerin 21

$109.96

SKU: 51160 Category: Brand:

Description

The Brooks Glycerin 21 has super-soft cushioning for supreme comfort. Now with more super-soft nitrogen-infused DNA LOFT v3 cushioning that is optimized to be lightweight, responsive, and durable for push comfort. With improved fit from the engineered warp knit upper which is breathable and allows for a flexible, accommodating fit while still soft against the foot. The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions. The new RoadTack rubber is environmentally friendly, with a recycled silica content. Other recycled materials used is equivalent to 5 plastic water bottles.

Men’s Brooks Glycerin 21

$100.00

SKU: 47949 Category: Brand:

Description

Explore Glycerin 21 running shoes for male runners looking for supreme softness and ultimate comfort. Plush DNA LOFT v3 cushioning, flexible fit, and distinct design for unmatched runs.

Brooks Men’s Glycerin 21

$110.83

SKU: 33245 Category: Brand:

Description

Whether you’re training for a marathon or just enjoy a leisurely run, the Brooks Glycerin 21 is the ideal all-round running shoe for the neutral runner. Go for short or long runs; the Glycerin does it all. This makes it suitable for both beginners and experienced runners. Get the most out of every step with this all-round running shoe! Midsole The Glycerin 21 has Brooks’ DNA LOFT v3 foam in the midsole. This foam is extremely soft and has an innovative character compared to the previous version. Nitrogen has been incorporated into the cushioning material to optimize responsiveness and cushioning. The foam has Brooks’ DNA technology, where the foam adapts to your running style. This means the shoe has a cushioning foam that ensures a smooth transition from heel to toe. On top of all this, extra step-in comfort and long-lasting cushioning are provided by the ORTHOLITE insole. This air-permeable sole ensures that your feet stay cool while running. Upper The upper of this model gives your feet the comfort they deserve. The airmesh upper provides ventilation to keep your feet cool, and this material also encloses your foot comfortably. The 3D Fit Print technology adds structure to the upper and offers extra stretch in places where it is desired. Recycled materials have been used to produce the upper, sustainability and comfort come together in this shoe. Outsole The shoe has a RoadTack outsole, made from a mix of rubber and recycled silica. In addition, this outsole technology from Brooks is durable and resilient to compression, making them extra long lasting. Put on your Brooks Glycerin 21 shoes and prepare to push your limits!

Brooks Men’s Glycerin 21

$109.95

SKU: 23510 Category: Brand:

Description

Explore Glycerin 21 running shoes for male runners looking for supreme softness and ultimate comfort. Plush DNA LOFT v3 cushioning, flexible fit, and distinct design for unmatched runs.

Brooks Men’s Glycerin 21

$98.50

SKU: 21621 Category: Brand:

Description

Introducing the Brooks Glycerin 21, the ultimate companion for road running enthusiasts seeking unparalleled comfort and performance. Engineered for neutral gait types, this running shoe boasts cutting-edge Brooks DNA LOFT v3 Technology, ensuring a responsive and cushioned ride that adapts to your unique stride. With a 10mm midsole drop, the Glycerin 21 promotes a natural foot motion, making every run feel effortless and enjoyable.Step into a new realm of breathability with the Glycerin 21’s innovative wrap knit upper, designed to keep your feet cool and comfortable throughout your run. This new upper not only enhances airflow but also provides a snug and adaptive fit, giving you the confidence to tackle any distance. The OrthoLite sock liner elevates the overall experience, delivering premium step-in comfort that lasts from the first stride to the finish line.Experience the perfect fusion of technology and style with the Brooks Glycerin 21. Conquer the roads with confidence, knowing that every feature is meticulously crafted to enhance your running experience. Elevate your performance, embrace comfort, and make every run a memorable journey with the Brooks Glycerin 21. Neutral gait type for versatile performance. Brooks NDA LOFT v3 Technology for responsive cushioning. New breathable wrap knit upper for enhanced airflow and adaptive fit.

Brooks Men’s Glycerin 21

$109.95

SKU: 17818 Category: Brand:

Description

With even more nitro-infused foam than before, the Brooks Glycerin 21 returns to deliver an ultra-comfortable and smooth ride for any distance. In this update, the Glycerin 21 adds 2mm more plush and responsive DNA Loft v3 foam into the midsole, offering a little extra softness to a shoe that’s already plenty soft. As a cherry on top, the additional cushioning does not come at the expense of extra weight. On the contrary, the Glycerin 21 weighs almost an ounce less than the previous model! Bringing long-lasting traction to the party is the new RoadTack rubber that is strategically placed in the outsole to deliver the grip needed to rack up the miles. This shoe is rounded out with a new engineered warp knit upper that checks the boxes of being accommodating, secure, and breathable, which only adds to the supreme comfort the Glycerin brings to the table. Running farther has been made easier than ever thanks to the Brooks Glycerin 21––all you have to do is enjoy the ride.

Brooks Men’s Glycerin 21

$109.95

SKU: 17770 Category: Brand:

Description

With even more nitro-infused foam than before, the Brooks Glycerin 21 returns to deliver an ultra-comfortable and smooth ride for any distance. In this update, the Glycerin 21 adds 2mm more plush and responsive DNA Loft v3 foam into the midsole, offering a little extra softness to a shoe that’s already plenty soft. As a cherry on top, the additional cushioning does not come at the expense of extra weight. On the contrary, the Glycerin 21 weighs almost an ounce less than the previous model! Bringing long-lasting traction to the party is the new RoadTack rubber that is strategically placed in the outsole to deliver the grip needed to rack up the miles. This shoe is rounded out with a new engineered warp knit upper that checks the boxes of being accommodating, secure, and breathable, which only adds to the supreme comfort the Glycerin brings to the table. Running farther has been made easier than ever thanks to the Brooks Glycerin 21––all you have to do is enjoy the ride.

Brooks Men’s Glycerin 21

$109.95

SKU: 13740 Category: Brand:

Description

Explore Glycerin 21 running shoes for male runners looking for supreme softness and ultimate comfort. Plush DNA LOFT v3 cushioning, flexible fit, and distinct design for unmatched runs.

Brooks Men’s Glycerin 21

$109.95

SKU: 13521 Category: Brand:

Description

The Brooks Glycerin 21 Running Shoes combine super-soft cushioning and supreme comfort. These shoes are equipped with a new, engineered warp knit upper that is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Their new RoadTack rubber includes recycled silica and is both lightweight and durable. They feature an additional 2 mm of DNA LOFT v3 midsole for a plush ride. Each pair are made with recycled materials equivalent to 5 plastic water bottles.

Brooks Men’s Glycerin 21

$111.83

SKU: 7363 Category: Brand:

Description

Choose the Brooks Glycerin 21 and experience the perfect combination of comfort and performance while running with this neutral all-round running shoe. Whether you’re heading out for a 5km or a slightly longer endurance run; the Glycerin can do it all. The shoe is suitable for both novice and experienced runners. Experience the perfect balance between cushioning and responsiveness with this all-round running shoe! Midsole The Glycerin 21 has Brooks’ DNA LOFT v3 foam in the midsole. This foam is extremely soft and has an innovative character compared to the previous version. Nitrogen has been incorporated into the cushioning material to optimize responsiveness and cushioning. The foam has Brooks’ DNA technology, where the foam adapts to your running style. This means the shoe has a cushioning foam that ensures a smooth transition from heel to toe. To top it all off, the ORTHOLITE insole ensures comfortable entry with long-lasting cushioning. Open cells in the sole keep your feet cool while running. Upper The airmesh upper of the shoe gives your feet the comfort they deserve while running. Airmesh has a ventilating function and encloses the foot comfortably. 3D Fit Print technology was used to design the upper. This technology adds extra structure in strategic places and increases the flexibility of the upper. Recycled materials have been used to produce the upper, sustainability and comfort come together in this shoe. Outsole The shoe has a RoadTack outsole, made from a mix of rubber and recycled silica. In addition, this outsole technology from Brooks is durable and resilient to compression, making them extra long lasting. Start your running session with the Brooks Glycerin 21 and pursue your goals!

Brooks Men’s Glycerin 21

$99.99

SKU: 3961 Category: Brand:

Description

Explore Glycerin 21 running shoes for male runners looking for supreme softness and ultimate comfort. Plush DNA LOFT v3 cushioning, flexible fit, and distinct design for unmatched runs.