XS Scuba Hypos Freediving FinsThe Hypos freediving fins are ideal for novice to intermediate free divers and those taking their first freediving class. They overcome that expensive barrier to entry posed by carbon fiber fins. These fins are lightweight, stable in the water and get the job done. These bi material fins offer comfortable thermoplastic rubber (TPR) full foot pockets and flex polymer blades. They can be worn barefoot, or with Lycra, polyolefin or thin neoprene socks.