Buy the 12 unit prepack: size run 11-12-13-1-2-3-4, size scale 1-2-2-2-2-2-1. Superior traction no matter where your child goes Beaches, rivers and even pools can present unexpected challenges for young feet - from slippery, moss-covered rocks to broken glass and sizzling concrete. Norty little kids / toddler aqua water socks keep a low profile while providing excellent traction and maximum protection from a variety of underwater hazards. If your family loves to be active in the water, you'll appreciate how the norty water socks hug your child's feet. Breathable mesh allows water and air to flow freely - which helps the shoes dry fast. Stretchable neoprene uppers provide a protective layer but are easy to slip on and off even when wet. the handy ankle pull tab helps with easy on and off. Cinches tight with a drawstring cord or strong fabric closure You won't have to worry about your kid's aqua socks sliding off their feet at inconvenient times and getting lost underwater.