Fourth Element Thermocline Fin SocksComfortable lining socks for full foot fins and neoprene boots. Constructed using flat lock stitching and fleece lined fabric, Finsocks minimize abrasion from full foot fins and allergy reaction to neoprene boots whilst eliminating the risk of sores or blisters from rubbing. Worn underneath neoprene boots, Finsocks help to keep the feet a little warmer and assist with the donning of a wetsuit by providing a low friction contact between the feet and