From Merrell, the Boys' Snow Storm 3.0 Waterproof Boots feature:  Waterproof synthetic and nylon upper to help keep feet dry recycled poly sock construction Heel loop for easy-on entry Alternative closure with hook and loop for easy on/off and adjustability recycled PET linings Anti-stink lining helps reduce odors 200g insulation on footbed and quarter lining helps keep feet warm Non-marking outsole with extra grip for superior traction and durability Imported.