North Face Thermoball Slippers - Men's sz 11. Dark grey. Almost new. Gifted other slippers so these need a new home. Speaking of, smoke-free, pesticide-free, no drama household. Get these "balls" on your feet and get rolling! Deets about feets: Approximate Weight (½ pair): 7.5 oz (214 g) ThermoBall™ Eco 100% recycled polyester insulation helps keep feet warm even when wet Upper: 100% recycled P.E.T. ripstop upper with non-PFC durable water-repellent (non-PFC DWR) finish to help keep feet dry Lightweight ThermoBall™ Eco insulation retains warmth Easy on/off design