Never lose a moment on the trails even when the weather turns cold with the superior style and warm comfort of the Kamik SnowPearl winter boots. Waterproof boot made of a nylon upper with synthetic leather overlays and a waterproof and flexible synthetic rubber shell. Soft boa snow collar and knit flannel cuff. Temperature rated to -40 degreesF/-40C. (Yup, this temp conversion is correct.) Traditional lace-up style with sturdy fabric laces, metal eyelets and speed hooks for a preferred fit. Seam-sealed waterproof construction keeps out the wet elements for a drier, more comfortable interior. Moisture-wicking fleece lining for cozy warmth while out in the snow. 200g of 200B 3M Thinsulate insulation features a unique microfiber that has more surface area to trap warm air for better insulation and a warmer foot environment. Lightly cushioned footbed for all-day underfoot. Heel counter lug for easy removal and snowshoe strap retention. Non-marking ICEKISS dual-density synthetic rubber outsole provides superior traction and grip on the ice and snow. Made in Canada. Measurements: Weight: 1 lb 6 oz Circumference: 15 1 2 in Shaft: 9 in Product measurements were taken using size 8, width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.