This waterproof and insulated 8″ Sport Boot from Converse is a well-built boot with a removable EVA cushion insert, a shock elimator heel plug and a sponge rubber heel wedge. The duel density outsole features an EVA cushion midsole with a heel airbag and a durable traction rubber bottom with a 90 degree heel. The composite toe securely protects the foot while remaining light weight and will not conduct heat, cold, or electricity. Composit toe meets or exceeds te ASTM F2413-05 standard for protective footwear. The boot features a Hy-Trel waterproof bootie and 400g of Thinsulate to keep feet warm and dry all day long. The shoe is 100% non-metallic and airport friendly.