3mm Premium Neoprene for Warmth & Comfort: Made of high-density 3mm neoprene and nylon, these kids water socks keep feet warm in cool water, soft against skin and flexible for all-day wear during swimming, diving, beach and outdoor activities. Anti-Slip Sole & Secure Fit for Safety: Feature anti-slip dotted sole design for better traction on wet surfaces, with stretchy ankle cuffs to stay in place. Protect kids from slipping, scratching or sharp objects at the beach, pool or ocean. Sand Proof & Sturdy Construction: Sand-proof ankle closure prevents sand, dirt and water from entering. Blind-stitched and glued seams enhance durability, while reinforced heel and toe extend the life of the socks for active toddlers and youth. Multi-Scene Use for All Outdoor Water Sports: Perfect for swimming, diving, surfing, snorkeling, beach volleyball, yoga, camping and hiking. Can be worn alone or with water shoes, fins and sandals, one pair for multiple water and land activities. Multiple Sizes & Colors for Boys & Girls: Available in various sizes from XS to XL and multiple colors to fit most toddlers, kids and youth. Easy to put on and take off, ideal gifts for children for beach trips, vacation, swimming lessons and outdoor play.