The Merrell Women's Jungle Moc Waterproof is a slip-on that adds waterproof performance to equip you for adventures through precipitation. Product Features : M Select FRESH prevents odor before it starts for fresh smelling feet Waterproof pigskin Molded nylon arch shank M Select GRIP tunes each outsole with durable traction that grips Compression molded EVA footframe provides a cushion feel Merrel air cushion in the heel adds stablility and absorbs shock