Sorel Women's Caribou Insulated Lace Up Removable Felt Liner Winter Boot brand new with box color black size 6, 7, 8 UPPER: Waterproof nylon upper. Seam-sealed waterproof construction. Laces are not waterproof. INSULATION: Synthetic insulation. Removable 6 mm washable recycled felt inner boot. MIDSOLE: 2.5 mm bonded felt frost plug. OUTSOLE: Handcrafted waterproof vulcanized rubber shell with herringbone outsole. HEEL HEIGHT: 1/2 in. PLATFORM HEIGHT: 1/4 in. SHAFT HEIGHT: 6 1/2 in. LACE LENGTH: 41" in. Please note: Laces and zippers incorporated in SOREL footwear are not waterproof. Measurements based on size 9.