North Face ThermoBall Lace Up Boots, Size 9, Black In used, great condition. Minimal wear on treads (which are great in snow/slush!). Very warm and soft interiors. From The North Face: The lightweight, waterproof Women’s ThermoBall™ Lace Up Waterproof Boots are secure-fitting winter boots with durable recycled ripstop uppers and warm ThermoBall™ Eco insulation.