COMFORTABLE AND LIGHTWEIGHT: unlike traditional water shoes, i play by Green Sprouts water socks are very lightweight and flexible making it easier for little ones to walk, play, and swim. i play by Green Sprouts swim socks weigh less then half the weight of swim shoes making them easier to move and less weight on little feet and ankles. NON-SLIP SOLE FOR SWIMMING AND WALKING: non-slip sole provides protection for delicate feet. Water socks help prevent nicks, scrapes, and scratches. STRETCHY, QUICK-DRY, CHLORINE AND SALTWATER RESISTANT: neoprene upper is water resistant, easy to put on, allows feet to breathe, and dry's quickly for comfort. HEALTH AND SAFETY—Made without formaldehyde and azo dyes, and independently tested by CPSC-approved laboratories. All of iplay by Green Sprouts products are developed based on 4 principals FUNCTION; HEALTH AND SAFETY; DEVELOPMENT, and THE NATURAL WORLD! iplay's high quality workmanship is made to last all season and maintain its shape; fabrics have excellent chlorine and saltwater resistance. FOOT PROTECTION: Unisex boys or girls water socks keep baby's feet safe and comfortable in and near the water. iplay's sand and water socks are great for infants, toddlers, and small children. Little kids love to wear these at the pool, the beach, or just playing outside on a hot summer day. Baby water socks are great for kids that do no like the feel of grass or sand on their feet. Aqua sock water shoes protect little feet from rough surfaces, cuts, and scrapes.