These are the socks made from proprietary fibers that dissipate heat and wick away moisture to keep feet cool and dry during exercise. Available only from Hammacher Schlemmer, the socks’s fabric underwent independent tests that proved it reduced body temperature by 1°, helping feet stay cool and dry while jogging or during daily activities. The fibers have greater surface area than typical fibers and are woven with small channels, allowing heat to escape quickly. The fibers undergo a special texturing process that creates a low-bulk yarn, enhancing breathability while mesh on the top and mid-sole provide ventilation. Padding under the heel and forefoot absorb shock and reduce friction to help prevent blisters. Made from a blend of nylon, lycra, spandex, polyester NILIT® Breeze. Blue. Imported. Women's. S (3 1/2-6) or M (6 1/2-9).