SIZE CHART: 3XS: shoes length 14-16cm(kids size) 2XS: shoes length 17-18cm(kids size) XS:shoes length 19-20cm(kids size) S:shoes length 20-21cm M:shoes length 21-22cm L:shoes length 23-24cm XL:shoes length 24-25cm XXL:shoes length 26-27cm 3XL:shoes length 28-29cm ATTENTION: THIS IS NOT MEANT TO USE ON SHARP OR HARD SURFACES SUCH AS CEMENT, ROCKS OR PAVEMENT ALL THE PROTECTION YOU NEED And MORE FOR YOUR MONEY keep your feet warm! The water socks feature grip soles to help prevent slipping and sliding to ensure your safety AND You get two pairs of premium quality neoprene fin socks for one great price with FUN TOES ULTRA DURABLE Our snorkel socks have extra thick soles that provide added protection for the soles of your feet and are reinforced all over, making them the best fin socks on the market today SIZES TO FIT EVERYONE Our unisex design is available in sizes for Men, Women and Kids SUITABLE FOR ANY ACTIVITY Use them as snorkeling socks, scuba socks or wetsuit socks for jet skiing, kayaking, paddling, boarding and more.