Youth Yoot Pac TP BootBrave the elements with waterproof and seam sealed construction. With soft sherpa cuff and traction, you'll rest easy knowing they're in the boots that were made for whatever winter has in store. Specs INSULATION: Removable 9 mm washable recycled felt inner boot with Sherpa pile snow cuff. OUTSOLE: Handcrafted waterproof vulcanized rubber shell with Sorel aero trac non loading outsole. MIDSOLE: 2. 5 mm bonded felt frost plug. UPPER: Waterproof PU