The Nanuq 2 GTX Cycling Shoe pairs a GORE-TEX Koala membrane with a fleece lining to keep feet warm and dry through winter mountain bike rides. The ripstop upper adds thermo-laminated PU reinforcement at the toe, heel, and sides for protection against trail debris and repeated scuffing, while a flat-pedal-specific outsole tread gives riders the traction and pedal connection this shoe is built for. A BOA(R) Fit System and zippered ankle cuff make getting the shoe on and off simple, even with cold hands or bulky winter socks. What Our Gearhead(R) Experts Are Saying:"I've splashed through creek crossings and slushy singletrack in these and never felt water get past the membrane. My feet stayed warm through a three-hour ride in temperatures that usually have me reaching for toe warmers."