Most winter boots aren't made for riding bikes - they're too warm in some spots or not warm enough in others, and they're not optimized for pedaling. Wolvhammer BOA(R) boots are the answer for winter riders. Designed and built for the rigors of real winter riding (deep snow, slippery ice, cold pedals), These winter bike boots are rated for comfort from 0deg to 25degF (-18deg to -4degC), slotting between our Ragnarok and W lfgar boots. Rated for 0deg to 25deg F / -18deg to -4deg C comfort The BOA(R) Fit System delivers micro-adjustable, precision fit engineered to perform in the toughest conditions Hook-and-loop upper strap helps secure boot Removable synthetic liner boot for quick drying Waterproof breathable membrane to manage moisture 200 g of Primaloft(R) insulation Aerogel insulation underfoot blocks the chill from snow, ice, and cold pedals, and allows for insoles without sacrificing warmth Non-slip sole for walking on icy surfaces Compatible with flat and clipless pedals Specifications Shoe Size (EU) 47 Gender/Age Unisex Color Black Toe Spike Compatibility No Defined Color Black Cleat Bolt Pattern 2-Bolt Closure Dial/Velcro Activity Cycling