These socks are made in high modulus thermoplastic polyethylene. This waterproof fabric is among the toughest materials available to manufacture sporting clothing goods and it features a certified level 5 anti-cut resistance. It can be used in the pool, replacing the classic neoprene socks, with a reduced thickness and an increased feeling. It can also be used in warm or cold waters by wearing it over a 2-3mm neoprene sock. The socks are reinforced in the ankle area for a better grip with the fin footpocket. They are available in five sizes, form size XS to size XL. Made in high modulus thermoplastic polyethylene Waterproof Reinforced in the ankle area for a better grip with the fin footpocket anti slip