Material and insulation Made of 3mm neoprene and nylon, the diving socks have insulation performance, helping slow temperature loss and keep your feet warm during water sports. They are lightweight and quick drying, with elasticity, waterproof, wearresistant and durable. Features include 360degree folding, convenient storage, easy carrying, and good breathability. Size reference Our sand proof beach volleyball socks water shoes are available in sizes S, M, and L. S: for foot length 2222.5 cm, UK size 45; M: for foot length 22.523 cm, UK size 67; L: for foot length 23.524 cm, UK size 78. Suitable for men and women. Velcro elastic design The sock opening of the thermal antislip scuba socks uses a Velcro design with an elastic Velcro strap that surrounds securely and is not easily displaced. You can adjust the tightness to prevent water, sand or small debris from entering, while ensuring a snug fit that stays in place and keeps you warm. Antislip design The bottom sole features antislip rubber particles to increase traction, allowing your feet to move flexibly and comfortably during water sports and beach activities. It helps reduce the risk of foot injuries from underwater reefs, sand and gravel cuts, abrasions, and contact with creatures such as jellyfish and sea anemones. Even in damp or rough conditions, it provides grip. Use scenarios 1) Snorkeling, swimming, or diving trips where warmth, protection, and grip are important. 2) Beach activities, shoreline walks, and reef explorations where traction and debris protection matter. 3) Water sports such as kayaking, standup paddleboarding, or beach volleyball sessions where a secure fit and durable protection enhance performance.