The Sorel Winter Carnival WP keep moisture and cold away from your feet, even in frosty temperatures. The outside is made of waterproof polyamide and vulcanized rubber and is also supported by sealed seams. Inside, a thermal inner boot made from six-millimetre-thick recycled felt, which can be completely removed, keeps you warm. There is also a two and a half millimeter thick felt midsole. The vulcanized rubber outer material merges into the treaded sole, which ensures traction even on snowy and slippery surfaces.