ADV SubZ Insulate Bootie 2 is a warm and waterproof neoprene bootie with taped seams that protects your feet in really cold and wet conditions. This advanced bootie is made of wind- and waterproof 3 mm neoprene with PU-coating on top and brushed inside for optimal insulation. In addition, all seams are covered with waterproof tape on the inside to keep water out. Reinforcement at heel and toe box add durability and longevity. 3 mm 4-way stretch neoprene and brushed backside for optimal protection and warmthAll seams are covered with waterproof tape on the insidePU-coated outer that shields against water and windExtra elastic neoprene at top of shaft for a tight fitReinforcements at heal and toe Durable, waterproof zipper at backReflective prints and details