The lightweight running shoe that will do it all, no matter the terrain– the Fast-Trac NITRO 2 has dropped. It delivers a smooth ride and ground-feel on surfaces including including loose trails and gravel, thanks to a full-length NITRO™ Infused top layer embedded in the PROFOAMLITE midsole. Add to that the durable PUMAGRIP-ATR outsole and integrated eyestays for a snug fit, along with details at the toe that help drain and protect from debris – and you're golden with this ground-breaking shoe made for all runners in all four seasons. FEATURES & BENEFITS NITRO™ Infused: Enclosed nitrogen-injected foam designed to provide responsiveness and cushioning in a lightweight package PROFOAMLITE: Extremely lightweight EVA designed to cushion your landing and propel each step PUMAGRIP ATR: Trail-ready performance rubber compound designed for traction on ice, mud, and unstable surfaces Ripstop mesh upper Forefoot drainage ports and debris protectors Cushioning level: Medium PUMA Formstrip on the lateral side Heel-to-toe drop: 6mm Shoe pronation: Neutral. Visit our page to learn more about our black PUMA Fast-Trac Nitro 2 Women's Trail Running Shoes, Black/Silver, size 35.5, Shoes.