Design: Breathable Unifi REPREVE® recycled yarn in primary and collar meshes Recycled poly laces Tongue mesh includes recycles material Earned the APMA Seal of Acceptance for promoting foot health In-Shoe Comfort: Toe rand for support and protection CMEVA foam midsole provides stable footing and absorbs impact point Traction & Durability: Zonal rubber placement for weight savings and durability 4mm lugs provide all-terrain traction Additional Details: Previous Model: Challenger ATR 5 Shoe Type: Neutral Midsole Drop: 5 mm Weight: 8.10oz