Up to 10 days of battery life in smartwatch mode

standing on your feet all day at work

with space for some notes in between

Designed for performance and active lifestyles

Men's Saucony Endorphin Speed 5 Size:13 Up to 10 days ofThe Endorphin Speed 5 is built to go fast and feel smoothwhether you're pushing the pace on track night with friends or you're chasing a PR. A newly designed nylon plate and responsive PWRRUN PB cushioning come together for snappy transitions and a fast ride. This is speed you can count on. Snappy Ride: A full length semi rigid nylon plate between two layers of responsive PWRRUN PB foam, giving you a perfect balance of propulsion and cushioning for