Built for speed

Streamlined collar foam package

it also absorbs more impact than the Cloudflyer 4

Sub4’s Action Endurance Tri Shorts are constructed using the exclusive Tri-Skyn material

Green Rubber in the outsole

Men's Saucony Endorphin Trainer Brand_Gu Built for speedThe Endorphin Trainer is a fast and light training shoe that combines the innovation, efficiency and a distinctive feel of the Endorphin franchise but engineered specifically for everyday training runs and high mileage weeks. Top layer of our Saucony's lightest, most efficient and most responsive incrediRUN foam is combined with a structured bottom layer of highly durable PWRRUN foam for unmatched efficiency but in a stable and durable platform that