Upper material: plastic Sole Material: PVC How to choose size? it is not standard US size. Please decide 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. we will send size 38. it comes with 24cm insole length If your feet are fat. you may choose the bigger one foot length range shoes insole length US EUR 22.1 22.5cm(8.70 8.86 in) =22.5cm(=8.86 in) =4.5 =35 22.6 23cm(8.90 9.06 in) =23cm(=9.06 in) =5.5 =36 23.1 23.5cm(9.09 9.25 in) =23.5cm(=9.25 in) =6 =37 23.6 24cm(9.29 9.45 in) =24cm(=9.45 in) =7 =38 24.1 24.5cm(9.49 9.65in) =24.5cm(=9.65 in) =8 =39 24.6 25cm(9.69 9.84 in) =25cm(=9.84 in) =8.5 =40 25.1 25.5cm(9.88 10.04 in) =25.5cm(=10.04 in) =9.5 =41 25.6 26cm(10.08 10.24 in) =26cm(=10.24 in) =10 =42 26.1 26.5cm(10.28 10.43 in) =26.5cm(=10.43 in) =10.5 =43 (allow 2-3mm differs)