The North Face Kids’ ThermoBall™ Pull-On Waterproof Boots, youth 5The Kids’ ThermoBall™ Pull-On Boots are lightweight, waterproof boots designed to help keep kids warm, dry and protected through those cold winter days. Our waterproof footwear incorporates a variety of advanced waterproofing materials, treatments, and processes. To help keep feet dry, we use internal waterproof membranes and/or adhesive and seam-seal constructions.