From Merrell, the Men's Moab 3 Thermo Mid Waterproof Boots feature: Textile and full-grain waterproof leather upper Waterproof membrane seals out water and lets moisture escape Protective and abrasion-resistant rubber heel and toe cap recycled fleece lining 200 grams Primaloft® Gold Eco Series synthetic insulation recycled wool footbed cover Molded nylon arch shank Merrell Air Cushion in the heel absorbs shock and adds stability recycled removable EVA foam footbed Super Rebound Compound provides durable shock absorption to help reduce torque and allow for a smooth transition into the midfoot Vibram® Icetrek outsole designed to provide an improved grip on very cold, icy, or snowy surfaces Imported.