US 7=EUR 39=245mm， US 7.5 =EUR 40=250mm， US 8=EUR 41=255mm， <br />US 8.5=EUR 42=260mm， US 9=EUR 43=265mm， US 9.5=EUR 44=270mm， <br />Size: This is the standard sneakers size， you can choose the normal size if you wear sneakers at ordinary times. If you ususlly wear leather shoes，you can choose larger one size. More width of the foot recommend choose big one size. Because everyone is different， only supplies the reference!