Non-Marking Kling-On Grip rubber outsole delivers incredible grip on dry and wet surfaces; 6 inches of 100% waterproof vulcanized rubber construction keeps feet bone dry; 3.5 neoprene combined with Korkers warm and cozy fleece lining, provide slipper-like warmth and comfort; Cush-Tech premium EVA midsole offers uber-cushy underfoot comfort and support; Stretch neoprene cuff allows for easy slip-on, while the enhanced heel-kick feature allows for easy, hands-free removal; Comfort rated down to -20 Degrees Fahrenheit; Sizes: Men's 8-14 (Whole Sizes Only)