The Moab 3 Thermo combines the same out-of-the-box comfort you expect from a Moab with PrimaLoft® Gold Eco insulation and Vibram® IceTrek for unparalleled winter performance. Waterproof membrane seals out water and lets moisture escape Waterproof leather and textile upper 100% recycled laces and webbing Bellows tongue keeps out debris Protective toe cap 100% recycled mesh lining 200 grams Primaloft® Gold Eco Series synthetic insulation Fleece-lined removable EVA foam insole Molded nylon arch shank Merrell Air Cushion in the heel absorbs shock and adds stability Super Rebound Compound provides durable shock absorption in the heel to help reduce torque and allow for a smooth transition into the midfoot. Vibram® Icetrek outsole designed to provide the improved grip on very cold, icy, or snowy surfaces Lug: 5mm