Waterproof/breathable and warm to -40 degree F! For when your hunt ain't a walk in the park... it's a slog in the slush or stroll in the cold! That's when the Bogs Classic Ultra Boots will deliver dry, warm, cushioned comfort, all day. They're built with thick 7mm Neo-Tech neoprene that's four-way-stretch flexible, 100% waterproof, and amazingly good at trapping heat. The hand-lasted rubber overlay is extra-extra-tough, so whether you're climbing through deadfall or untangling yourself from a barbed wire fence, these will hold up, guaranteed. PROVEN COMFORT, SUPPORT, AND TRACTION. Classic Ultra High Rubber Boots feature a contoured EVA footbed and rubber sponge midsole that team up for shock-absorbing comfort and cushioning, so you can stay out longer. Underfoot, the chemical-resistant, non-marking BioGrip outsole provides sure footing and self-cleaning convenience, so you don't have to drag around mud and slop. THE BOGS STORY: The original Bogs Ultra Boot was designed to help dairy farmers stay dry, safe and comfortable on slippery surfaces. And then the light bulb went off. "Hey, if they work for farmers who have to deal with some of the worst muck in the world, in some of the worst conditions imaginable, they'll probably work for hunters too." And they were right. Constructed with thick 7mm waterproof Neo-Tech four-way stretch neoprene for comfort and warmth; Durable hand-lasted rubber covers the foot portion of the boot, with extra coverage over the shin and above the achilles; Easy pull-on handles for convenient on/off; Lined with Bogs Max-Wick lining for moisture-wicking comfort and dryness; Non-slipping, non-marking BioGrip outsole is chemical-resistant and self-cleaning; DuraFresh bio-technology fights unwanted odors; Contoured EVA footbed for comfort and support; Internal midsole with rubber sponge for added comfort; Comfort rated for temperatures down to -40 degrees F; Circumference at calf: 17"; Backed by a 100% Lifetime Satisfaction Guarantee; Each appro