Design: Recycled P.E.T. ripstop upper with durable water-repellent finish helps keep your feet dry Standard tongue covered in spacer-mesh for plush comfort and ease of entry Fully adjustable laces for a perfect fit Durable construction perfect for everyday wear Canvas rand for lightweight protection In-Shoe Comfort: Lightweight ThermoBall™ Eco insulation retains warmth to keep your feet cozy Flow-through heel cradle for comfort Outsole-grade molded-EVA midsole for lasting support Durability & Traction: Surface Control™ rubber outsole has micro-lugs for lightweight traction Additional Details: Outsole is made with 20% bio-based material