Men's Glycerin Flex SIZE:12.5 The softest layer in your

The softest layer in your running wardrobe just got an upgrade — our women's half zip running top has a watch window so you can stay warm and toasty when you check your pace

The most responsive spike on the track

fluid ride without sacrificing comfort

breathable comfort

Men's Glycerin Flex SIZE:12.5 The softest layer in yourThe Brooks Glycerin Flex brings together plush cushioning and adaptive flexibility to help runners move with confidence. DNA Tuned cushioning uses a dual cell nitrogen infused design to create soft landings in the heel and responsive toe offs in the forefoot. The result is a smooth, efficient ride that feels connected from the moment your foot hits the ground. A new engineered flat knit upper adds breathable comfort while allowing natural foot motion.