booties

Wetsuit socks, generally made with three-millimeter neoprene uppers and a treaded hard-rubber sole; named for their resemblance to baby booties; almost always worn in conjunction with a fullsuit—a one-piece wetsuit that covers everything but a surfer's hands, feet, and head. Booties come in round-toe or split-toe designs, and often have a cinch-down Velcro strap around the opening to prevent water...