Dri Defense Using a unique design that encapsulates the foot, Kamik&rsquo, s Dri Defense is a proprietary bootie membrane that is completely waterproof & blocks any moisture from getting into the boot. Zylex®, Easy removal for washing &, drying Comfort rated to -25°, C/-32°, F or -40°, C/-40°, F Our proprietary Zylex technology is the ultimate innovation for superior warmth & moisture management. Our revolutionary three-layer design wicks perspiration away from feet while at the same time trapping body heat & deflecting the cold. & with reinforced seams & heel guard, these liners are incredibly durable. Easy Grab Lace Lock Made to block snow & cold from getting in while at the same time making sure body heat doesn&rsquo, t escape, our patented* bungee technology is one more way our boots provide protection & warmth. & it&rsquo, s easy to use
- even a child in mittens can securely tighten it without having to tie the cord.