Size Conversion and Feet Measurements EU 35 US 5.0 UK 2.0 | 23.0 cm EU 36 US 6.0 UK 3.0 | 23.5 cm EU 37 US 6.5 UK 4.0 | 24.5 cm EU 38 US 7.5 UK 5.0 | 25.0 cm EU 39 US 8.5 UK 6.0 | 25.5 cm EU 40 US 9.0 UK 7.0 | 26.0 cm EU 41 US 10 UK 8.0 | 26.5 cm We also can make half sizes (36,5 , 37,5 , 38,5 etc), or large width. Specify this information in your order. For example: "on request: 37,5 size with large width" You can also order additional ORTHOTIC insoles: https://www.etsy.com/listing/1060315140/orthotic-leather-insole-with-arch?ref=shop_home_active_1&frs=1 ------ 100% Leather ------ Free exchanges & returns ------ 180 days warranty ------ Insulation inside: all our shoes can be done in 3 variations: - with leather inside; - with a fabric inside; - with natural sheepskin (fur) inside. P.S. We are always looking for the opportunities to develop, so if you have any request (change the color of the leather for example) just contact us! :)