Great for kayakers, jet skiers and multi-sporters, to Dry suit wearers and spear fishermen using full foot fins Chill proof socks keep your feet dry by wicking the moisture away100% warm and super toasty, use under boots or by themselves Sharkskin Childproof is an aquatic specific, windproof 3-layer composite material that has been developed for water sports athletes. The comfortable 'micro fleece' layer is next to the skin and 'wicks' moisture and sweat away from the body to help keep you dry. The second middle 'technical' layer is 100% windproof yet breathes to regulate body temperature while stopping wind-chill. The third outer layer is a nylon/lira blend for abrasion resistance and 4 way stretch. It is also UV resistant for sun protection and has a durable water repellent finish (DWR) to provide a protective shell that 'sheds' water. Sharkskin Childproof is neutrally buoyant, anti-microbial, odor resistant, itch resistant and machine washable. PERFORMANCE GUARANTEE Authentic Sharkskin garments come with a 12 month guarantee on workmanship. Excludes fading and degeneration as a result of excessive exposure to chlorine or sunlight. We guarantee Sharkskin will perform as advertised.