Children's Whitney™ II Puffy Mid boot delivers lightweight and waterproof protection for young adventurers. Waterproof synthetic and nylon material on the upper keep feet dry, while 200g insulation helps lock in warmth.UPPER: Waterproof nylon upper and PU coated synthetic overlays. Microfleece lining. Nylon heel pull tab. Waterproof bootie construction.INSULATION: 200g insulation.FOOTBED: Removable molded PU-like EVA footbed, microfleece topcover.OUTSOLE: Molded rubber cupsole construction.HEEL HEIGHT: 1 1/2 in.PLATFORM HEIGHT: 3/4 in.SHAFT HEIGHT: 7 in.SHAFT CIRCUMFERENCE: 14 1/4Uses: Heavy Snow