Abrasion resistant outsoles withstand prolonged contact with rough surfaces

• Altra Slim Footshape fit is the slimmest-fitting option that still allows room for your toes to spread out naturally
• Natural Fit has roomy toe boxes and zero drop, built to keep you comfortable and keep you running
• Grid-like Innerflex grooves in the midsoles are designed to provide flexibility and movement
• Original Altra EGO foam is designed to harmonize the balance between responsiveness and comfort
• Footpod outsole technology encourages natural movement underfoot

Cushioned collars minimize achilles tendon irritation during abrupt stops.