Pry yourself out of those ski boots and pull on these extremely warm, durable and water-resistant booties with durable high-traction soles.
ThermoBall is a revolution in insulation technology. Unlike traditional continuous-filament synthetic insulation, the small, round PrimaLoft synthetic-fiber clusters closely mimic down clusters, trapping heat within small air pockets to retain warmth. Independent clo testing by Kansas State University has shown that ThermoBall has warmth equivalent to 600 fill goose down. As a result, ThermoBall can offer the lightweight warmth and compressibility of down with the wet-weather insulating performance of synthetic insulation.
Approx Weight (½ pair): 8.5 oz (240 g)
Cabin, Relaxing, Cozy Feet, Staying Warm