Merrell Men's J87311 Leather Waterproof Durablend Leather/Mesh Upper - The breathable, waterproof upper is designed with a soft material blend that encourages improved air flow that keeps the feet dry. Bellows Tongue Cover - Prevents mud and debris from getting inside the shoe. Synthetic Leather Toe/Heel-Caps - Protects the toe/heel in mountains or trail environments. GORE-TEX Extended Comfort Footwear Lining - Prevents water from permeating the shoe's exterior lining. Aegis Antimicrobial Solution - Quells the spread of odour carrying bacteria to maintain a fresh environment.