Waterproof Full grain and Pig suede upper. Faux fur collar. Inside zipper for easy on and off. Merrell Waterproof construction uses waterproof taped seams and upper materials to seal out water and keep feet dry. 200g M Select WARM lightweight, low bulk insulation keeps you warm. Breathable mesh lining. M Select FRESH naturally prevents odor before it starts for fresh smelling feet. 10” shaft height from heel base. M Select MOVE foot frame gives you an ideal combination of natural flex, contoured support and performance cushioning for all-day comfort. Molded nylon arch shank. Merrell air cushion in the heel absorbs shock and adds stability. M Select GRIP tunes each outsole with durable traction that grips when and where you need it.