These quilted ankle booties are built extra tough to keep feet incredibly comfortable anywhere, whether it's indoors on the couch or outside by the campfire. Flexible ripstop mesh upper with quilted foam for added comfort. Synthetic rand gives additional protection from rocks and roots. Thermoregulating lining, made from recycled mesh, keeps feet just the right temperature - not too hot, not too cold. Extra thick removable B-Bound® footbed, our softest midsole material, offers supreme cushioning and energy return all day long. Rubber outsole provides traction and durability on varied surfaces. Anti-odor treatment helps reduce bad odors.