Waterproof seam-sealed construction and insulated interior. Perfect for snowmen building, family hikes, and winter activities.* UPPER: Waterproof PU coated leather upper. Seam-sealed waterproof construction. Laces are not waterproof.* INSULATION: Synthetic insulation. Removable 9 mm washable recycled felt inner boot with Sherpa pile snow cuff.* MIDSOLE: 2.5 mm bonded felt frost plug.* OUTSOLE: Handcrafted waterproof vulcanized rubber shell with Sorel aero-trac non-loading outsole.