Men's Glycerin Flex SIZE:9 Designed for trail addicts and

Designed for trail addicts and mileage hunters alike

Designed to take you from your workout to the rest of your day

designed to protect your legs and keep you moving comfortably over big miles

while zero drop and Altra’s Original FootShape™ Fit give your toes room to spread naturally for stability and comfort

six-pin spike plate

Men's Glycerin Flex SIZE:9 Designed for trail addicts andThe 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.