The North Face Alpenglow II Insulated Boot (Toddler/Little Kid/Big Kid) 100% Synthetic Rubber sole Easy on/off winter pull-on is designed with lightweight yet durable materials Durable, water-resistant, element-shedding, 100% recycled P.E.T upper Protective, waterproof, polyurethane (PU) coated leather upper overlays Cemented and seam-sealed waterproof construction Removable felt inner lining