【Unisex Size Reference】 US 3.5 Men/5.5 Women = EU 36 = 9.29'' US 4 Men/6 Women = EU 36.5 = 9.45'' US 4.5 Men/6.5 Women = EU 37 = 9.53'' US 5 Men/7 Women = EU 38 = 9.76'' US 6 Men/8 Women = EU 39 = 10.00'' US 7 Men/8.5 Women = EU 40 = 10.24'' US 7.5 Men/9 Women = EU 41 = 10.47'' US 8 Men/9.5 Women = EU 41.5 = 10.63'' US 8.5 Men/10 Women = EU 42 = 10.75'' US 9 Men/10.5 Women = EU 42.5 = 10.90'' US 9.5 Men/11 Women = EU 43 = 10.98'' US 10 Men/11.5 Women = EU 44 = 11.22'' US 10.5 Men/12 Women = EU 44.5 = 11.34'' US 11 Men/13 Women = EU 45 = 11.54'' US 11.5 Men/14 Women = EU 46 = 11.77'' US 12 Men/15 Women = EU 47 = 12.00'' US 13 Men/15.5 Women = EU 48 = 12.28'' Please measure your feet's length and compare with our size chart to get a better fit. If you are not sure about the size, just contact us. 【Unique Design Shoes】 Rubber sole cushion your every step Anti-slip, stretchy and wear-resistant Soft lining provide a comfortable fit Lightweight and breathable Also a great gift choice