Highlights On recommends buying your usual size as this model fits true to size Updated shape and reduced heel offset gives a smoother, more comfortable ride Knitted sock for an easier step in and more breathability also keeps dirt out Redesigned outsole delivers 50% more ground contact and serious traction Reinforced mid-foot panels provide support on even the loosest of trails Design: 100% recycled polyester double layer mesh upper FlipRelease system allows you to adjust the forefoot volume and find your perfect fit Updated shape and reduced heel offset gives a smoother, more comfortable ride Knitted sock for an easier step in and more breathability also keeps dirt out Reinforced mid-foot panels provide support on even the loosest of trails In-Shoe Comfort: Engineered collar for improved heel comfort and fit Ultrasoft Helion™ superfoam supports superior performance and a smoother running sensation Speedboard® loads with energy every time you land and CloudTec® compresses to soften even the harshest of impacts Durability & Traction: Enhanced Missiongrip™ outsole delivers 50% more ground contact and serious traction Additional Details: Best for: Ultrarunning, trail running, trail racing Heel offset: 6mm Brand : On