Muck Boots Arctic Excursion Ankle Rubber Boot - Men's Black 13. The fleece lining offers superior comfort softness and durability while the EVA midsole delivers lightweight cushioning and support on long cold treks. Featuring flexible 5 mm neoprene these men's snow boots adjust to the curves of your foot to resist chafing while also absorbing shocks and retaining body heat in winter weather. The rubber pod EVA outsole of these men's winter boots grips slippery surfaces for sure footing on a variety of terrains from icy sidewalks to muddy walkways. Specifications for Muck Boots Arctic Excursion Ankle Rubber Boot - Men's: Manufacturer: Muck Boots Gender: Male Age Group: Adults Men's Shoe Width: Medium Boot Style: Winter Boot Footwear Type: Boots Activity: Hiking Weight: 1.9 lb Fabric/Material: Rubber Footwear Upper Fabric/Material: Rubber/Neoprene Insole Material: EVA Water Resistance Level: Waterproof Lining Material: Fleece Insulation: Fleece Outsole Material: Aggressive Rubber Midsole Material: Lightweight EVA Temperature Rating: -40 F / -40 C Features of Muck Boots Arctic Excursion Ankle Rubber Boot - Men's 5 mm neoprene provides comfort and flexibility along with excellent waterproofing shock absorption and heat retention properties Adjusts to your foot shape to resist blisters and chafing High-grade extended rubber exterior provides additional tough waterproof barrier Low cut is perfect for cold days when the snow is not too deep but the conditions are muddy slushy or wet Fleece lining is soft durable and provides exceptional warmth in frigid environments Sockliner reduces underfoot friction and heat build-up Comfort rated from -40F to 40F (-40C to 4C) EVA midsole for lightweight support and cushioning Rubber pod EVA outsole grips for better traction on ice and rain-slick surfaces. Package Contents: Muck Boots Arctic Excursion Ankle Rubber Boot - Mens Muck Boots AELA-000-BLK-130: Arctic Excursion Ankle Rubber Boot - Men's Black 13