Design: Molded puff collar construction Breathable single-layer mesh upper with 35% recycled polyester delivers breathable, foot-hugging comfort Lay-flat gusseted tongue mitigates tongue migration and trail debris Early stage MetaRocker(TM) for smoother heel-to-toe transitions 3D printed rand for added stability Rear foot-focused Active Foot Frame(TM) In-Shoe Comfort: Lightweight, responsive midsole compound Extra plush sockliner for lasting comfort Durability & Traction: 5mm multidirectional lugs provide enhanced traction on uneven terrain Strategic rubber wrap for durability and stability Additional Details: Best For: Trail Running Weight: 9.8 oz / 279 g (size 10) Stack Height: 33 mm heel / 28 mm forefoot Drop: 5 mm