Design: Updated engineered mesh upper for improved durability Altra® Slim FootShape™ fit for a more snug, comfortable fit that still allows room for your toes to spread out naturally In-Shoe Comfort: Altra® EGO™ MAX foam is designed for performance and durability Balanced Cushioning™ platform positions your heel and forefoot at an equal distance from the ground for better alignment and form Durability & Traction: MaxTrac™ outsole provides the perfect combination of grip, traction, and durability Additional Details: Weight: 10.7 oz / 303g