The North Face ThermoBall Traction Bootie in black delivers lightweight warmth, reliable traction, and easy everyday comfort. Designed with a 100% recycled PET ripstop upper finished with a non-PFC DWR coating, it sheds light moisture while staying eco-conscious. Inside, ThermoBall™ insulation made from 100% recycled polyester keeps your feet warm—even in damp conditions. A simple slip-on design makes these booties convenient for base camp, après ski, or lounging at home, while the outsole—made with up to 20% recycled rubber—provides secure grip on slick or snowy surfaces.