Design:100% waterproof breathable bootie construction combined with waterproof leather 1200g of 3M™ Thinsulate™ insulation, highly rated for extreme winter cold Boa®M4 Fit System for fast and effortless on/off and custom fit In-Shoe Comfort:Premium aerogel frost barrier footbed keeps the feet warmDurability & Traction:Customized traction on the fly; easily change soles as conditions or terrain demand Molded TPU toe cap for durability and protection with recessed stitching for added abrasion resistanceAdditional Details:Comfort rated down to -60 °F Height: 11 in. Weight: 4 lbs. 4 oz. per pair





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