COLD-WEATHER CLASSIC Often imitated, but never equaled. The original SOREL boot features waterproof construction, seam-sealing, and a removable felt inner boot with a sherpa cuff for warmth, comfort and protection in harsh winter weather. The vulcanized rubber sole grips hard to keep you steady in slick conditions. Removable 9 mm washable recycled felt inner boot with Sherpa pile snow cuff., 2.5 mm bonded felt frost plug., Handcrafted waterproof vulcanized rubber shell with Sorel aero-trac non loading outsole., Waterproof nubuck upper. Seam-sealed waterproof construction. Laces are not waterproof. Seam-sealed Waterproof Construction