Moisture management is one of the most important elements of winter cycling and can make or break a ride. On long rides in extreme conditions, having a spare pair of 45NRTH's Wlfgar boot liners means you can ride confidently knowing that you have a dry, fresh pair when you need it. Constructed with a wool/polyester blend for durability, Wlfgar's liner boot wicks moisture away from your skin while still maintaining its insulation value to keep your feet dry and comfortable. Hook-and-loop on the heel secures the liner inside the shell boot. For use with 45NRTH Wlfgar boots only (sold separately)