Upper Material: Matryx combines Kevlar and polyamide threads for lightweight, breathable, and durable performance Laces: 100% recycled for eco-friendliness Tongue Webbing: 60% recycled, contributing to sustainability Footbed & Tongue Lining: 37.5 mesh for temperature regulation Footbed: ETPU high rebound foam for cushioning Midsole: FloatPro Foam ensures long-lasting comfort The MTL Long Sky 2 is an elite trail runner ready for any challenge. It features an internal bootie for a secure fit, sitting atop Merrell's FloatPro Foam midsole, which excels on long runs. Designed to handle varied conditions, it has quick-dry construction. When surfaces are slippery, the Vibram MegaGrip outsole provides top-tier traction.