The LaCrosse ZXT Foam-Insulated Knee Boot is ideal for days that require extreme mud and waterproof protection. The natural, hand-laid ZXT rubber upper delivers uncompromising waterproof performance, is highly resistant to abrasions and chemicals, and is specially formulated to be ozone- and tear-resistant as well. Lightweight and always long-wearing, this premium rubber won’t crack in the cold, won’t get soft in the heat, and won’t ever let you down when you need it most. Polymeric foam insulation extends from the bottom of the foot to the ankle for exceptional warmth. The 9mm wool felt midsole is naturally insulating and also helps with air circulation and odor control. A second layer of rubber is added to the toe for stronger abrasion resistance in this high-wear area. An extra layer of rubber is applied underfoot and around the instep for added protection during shovel impact. The removable EVA footbed provides optimum cushioning underfoot, and the fiberglass shank offers extra stability and support. The extra-durable Trac-Lite outsole is fully vulcanized, ensuring that it won’t ever separate from the upper. Its 90° heel and versatile, gripping lug pattern yield slip-resistant traction wherever you tread. The boot is designed to meet or exceed ASTM F2892-11 EH safety standards. Comfort range: -20° to 70° F (-29° to 21° C). 16” shaft height. Weight: 4 lbs. 8 oz. Medium width. Imported.