Upper material: PU Heel shape: flat Style: Fashion function: to keep warm Color: yellow, brown, coffee Size: 5, 5.5, 6.5, 7, 7.5, 8, 8.5, 9, 10, 10.5 US 5 = CN 34 = 220 mm US 5.5 = CN 35 = 225 mm US 6.5 = CN 36 = 230 mm US 7 = CN 37 = 235 mm US 7.5 = CN 38 = 240 mm US 8 = CN 39 = 245 mm US 8.5 = CN 40 = 250 mm US 9 = CN 41 = 255 mm US 10 = CN 42 = 260 mm US 10.5 = CN 43 = 265 mm It is not standard US size. Please select the shoes size according to your foot length or your shoes inside length, Please do not decide the size by Google or The size standard in your country. For Example: If you choose US 7.5. We will send size 38. it comes with 24cm insole length If you feet are fat. You may choose the bigger one Note: Dear friends, please buy the right size according to the size of the foot, Thank you, I wish you a happy shopping.