Keep the elements in check with the superior protection of the Kamik Icebreaker snow boots! Rubber(He) upper with an adjustable 1000 denier weather collar. 100 percent waterproof rubber. Removable 8mm Zylex liner has a three-layer design that wicks away moisture, keeping your feet warm and dry in extreme temperatures. It is also easy to remove for quick overnight drying and is made of 97 percent recycled material. 11mm Zylex insole offers excellent underfoot cushioning and helps wick away moisture for drier foot environment. Kamiks TRACKER Rubber(He) outsole is acid and oil resistant. Comfort rated for -40 degreesF/-40 degreesC. (Yup, those temp conversions are correct.) Made in Canada with Canadian and imported materials Measurements: Heel Height: 1 1 2 in Weight: 2 lbs 3 oz Circumference: 17 1 2 in Shaft: 13 in Platform Height: 1 2 in Product measurements were taken using size 12, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.