On a snowy walk to the mailbox and around the block, the Knee High Hikas Gaiter wraps the lower leg in insulation made from recycled PET and oyster shell fill, from the knee down. Worn inside the boot, this insulated knee high gaiter compresses comfortably there and expands above, so the warmth stays close to the leg. A ripstop exterior helps keep out snow and slush along the way. What Our Gearhead(R) Experts Are Saying:"On a cold sled hill afternoon, the wider top fit my calves comfortably, and the gaiter sat flat inside my snow boots through every trudge back up the hill. My legs stayed warm from the knee down because the insulation covers the whole lower leg."