The Caribou is a favorite for everyday cold weather activities. This ultra comfortable boot features seam-sealed waterproof construction, with a suede and ballistic nylon upper. Iconic Caribou lug design provides proven traction on various terrain. UPPER: Waterproof nubuck upper. Seam-sealed waterproof construction. Laces are not waterproof. 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. HEEL HEIGHT: 1 1/4 in. PLATFORM HEIGHT: 3/4 in. SHAFT HEIGHT: 8 1/2 in. LACE LENGTH: 43 in. Please note: Laces and zippers incorporated in SOREL footwear are not waterproof. Measurements based on size 7. Uses: Heavy Snow Gently Used.