Design: Secure-fit lace-capture system In-Shoe Comfort: Removable PU insole for long-lasting comfort Breathable mesh lining TPU heel-capture system for stability Padded tongue and collar for comfort Durability & Traction: KEEN.DRY: A proprietary waterproof, breathable membrane that lets vapor out without letting water in Waterproof leather and textile upper Non-marking rubber outsole leaves no trace PFC-free durable water repellent Cleansport NXT(TM) for natural odor control Additional Details: Care: Gently brush leather with a soft bristle brush or hand towel to remove loose dirt and debris. Tough stains may require a leather cleaner