IST 3mm Super Stretch Neoprene High-Cut Diving, Freediving Socks 3mm high cut, super-stretch Neoprene fin socks for use alone or in full-foot fins Seams are blind stitched and double glued for durability and to prevent seepage Grip dots on the sole provide traction Perfect for use in warm to temperate water, can be layered under other booties for cold water dives Ideal for use as a rental dive sock