36 == 23.0CM 37 == 23.5CM 38 == 24.0CM 39 == 24.5CM 40 == 25.0CM 41 == 25.5CM 42 == 26.0CM 43 == 26.5CM 44 == 27.0CM 45 == 27.9CM 46 == 28.6CM Please choose size according to foot length. Please allow 0.3 to 0.6 cm difference because of manual measurement, We will send you shoes by EUR size on table. When you order the shoes, you need to choose according to the CM size. The comfortable insole size is the foot length + 0.5cm. For example: You foot length is 23 cm, and then you need to order the insole size 23.5 cm.