Timberland Men's Earthkeepers Sport Boat Shoe 100% Leather and synthetic Rubber sole Premium full-grain leather and Bionic canvas upper for rugged durability Bionic canvas contains yarns made with a 50% organic cotton outer wrap, 38% recycled PET core and 12% HT polyester to provide increased strength, abrasion resistance and decreased dry time Padded collar for comfort 100% recycled PET linings Removable anti-fatigue footbed provides all-day comfort and support