Brooks Glycerin Flex men's Altra Perfect for long-distance runners

Perfect for long-distance runners

These shorter running boxers feature seamless construction to eliminate irritation

Here's to focusing on your run and not your feet

The Smart Calories function provides an estimate of calories burned

Brooks Glycerin Flex men's Altra Perfect for long-distance runnersOWN THE RUN. Be in control of the run like never before in the NEW Glycerin Flex with innovative flexible cushioning working as an extension of the body. The innovative smooth ride offers carefully crafted flexibility, from midfoot to toe off, to feel the best parts of the run and support to go the distance. UPPER New engineered flat knit provides enhanced comfort and breathability thats flexible and moves with your foot. MIDSOLE DNA TUNED with tuned