Product Story The Fast-Trac Apex Nitro Is A Lightweight Trail Running Shoe Designed To Take You Wherever You Want To Go, From Loose Gravel And Muddy Track To Technical Mountain Trail. It Has A Whole Load Of Tech To Get You More Connected To Your Run – Including A Responsive Full-Length Nitro Foam Layer In The Midsole And A Puma Grip Atr Outsole That Provides Multi-Directional Traction On All Surfaces. Features & Benefits Nitro: Advanced Nitrogen-Injected Foam Designed To Provide Superior Responsiveness And Cushioning In A Lightweight Package Pwr Tape: Targeted Upper Reinforcement For Support And Durability Puma Grip Atr: Trail-Ready Performance Rubber Compound Designed For Traction On Ice, Mud, And Unstable Surfaces Recycled Content: The Upper Of This Shoe Is Made With At Least 20% Recycled Materials As A Step Toward A Better Future Toe Drainage: Rubber Is Wrapped Up To Provide Protection From Rocks And Roots, While Also Protecting A Uniquely Placed Toe Drainage Port Rip-Stop Material: Executed Upper Is A Breathable Rip-Stop Mesh, Delivering Support, And Just-Right Stretch. Details Heel Type: Flat Shoe Width: Regular Fit Shoe Pronation: Neutral Heel-To-Toe-Drop: 6 Mm Built For An Average Running Distance Of Up To 500 Km Semi-Curved Last Shape Accommodates Most Foot Shapes And A Straighter Big Toe Preformulate: Extremely Lightweight Eva Midsole Designed To Cushion Your Landing And Propel Each Step Toe Drainage Port Cushioning Level: Medium Runner Type: Competitive Ideal For Trail Running.