<b>Kid's/Women's/Men's Water Shoes Barefoot Quick Dry Socks for Beach Outdoor Swim Yoga Sports</b><br><br>Size Chart:<br><br>12.5-13 M US Little Kid = Insole Length 7.67in = EU30-31<br><br>1-2 M US Little Kid = Insole Length 8.27in = EU32-33<br><br>XS: 3.5-4 M US = Insole Length 8.03in = EU 34-35<br><br> S: 5-5.5 M US Men / 5.5-6.5 M US Women= Insole Length 8.46in = EU 36-37<br><br> M: 6.5-7.5 M US Men / 7.5-8.5 M US Women= Insole Length 9.05in = EU 38-39<br><br> L: 8.5-9 M US Men / 9.5-10.5 M US Women= Insole Length 9.45in = EU 40-41<br><br> XL: 9.5-10 M US Men / 11-12 M US Women= Insole Length 10.0in = EU 42-43<br><br> XXL: 10.5-11 M US Men / 13-14 M US Women= Insole Length 10.55in = EU 44-45<br><br><b>Tips for how to measure feet</b><br><br>Please stand on a pair of paper and mark where your toe and heel are. Then, measure the length from your toe to heel and find the most suitable size of your feet according to above size chart.<br><br>We recommend you choose one size up if your feet is between two sizes.