Dear friend, thank you for browsing our products,I hope you can enjoy shopping. About the product Sole material:Rubber Size: 39,40,41,42,43,44 Because US shoe size and China shoe size is not completely equal, so the following shoe size is only for reference:(Best selection method: check foot length) EU 39 = US 7.5 =foot length 24.5 CM =9.5inch EU 40 = US 8 =foot length 25 CM =9.7inch EU 41 = US 8.5 =foot length 25.5 CM =9.9inch EU 42 = US 9 =foot length 26 CM =10.1inch EU 43 = US 9.5 =foot length 26.5 CM =10.3inch EU 44 = US 10 =foot length 27 Cm =10.5inch (All measurement in cm and please note 1cm=0.39inch) Tips: Measurements are the maximum size,please allow appr ±0.5-1cm tolerance. Compare the chart size with your feet length carefully before ordering. 1.Please choose your size according to your foot lengt 2.If you do not measure feet long, another method is to measure the shoes you're wearing insoles length,based on the insole length of the table ,then select shoe size