Brooks Glycerin 21 - White - White - Grey Color:White - White - Grey Flying NB forefoot logo for

Flying NB forefoot logo for a bold race-day look

Size Waist Hip XS 28-30 33-35 S 30-32 35-37 M 32-34 37-39 L 34-37 39-43 XL 37-42 43-47 XXL 43-47 47-52

Comfortable and cozy double-lined hood

Altra's signature FootShape™ comfort gives your feet more space to sit naturally and is designed to address biological differences in men's and women's feet

Supportive upper hugs the foot for a secure

Brooks Glycerin 21 - White - White - Grey Color:White - White - Grey Flying NB forefoot logo forFeatures: Supreme softness. Now with more super soft, nitrogen infused DNA LOFT v3 cushioning that is optimized to be lightweight, responsive, and durable for plush comfort. . Improved fit. New, engineered warp knit upper is breathable and allows for a flexible, accommodating fit while staying soft against your foot. Smooth, stable transition. The broad platform stabilizes your foot and promotes smooth heel to toe transitions Whats New : New RoadTack