1. Professional snorkeling fabric, breathable, fit to the feet, not sweating, no sand. 2. Double-layer stepping on the line, not running the line, running does not fall off. 3. Thicken heel of the socks, protect your feet. 4. Non-slip rubber sole, tough and soft, wear-resistant and non-slip. 5. Flexible, can roll anyway, can be easy to carry.
