Measurements are manually taken and may have an error of Approx. 5-10 mm. Sizes: 250, 260, 270, 280, 290. Inner length of shoes: 235 mm, 245 mm, 255 mm, 265 mm, 275 mm. Suitable sizes: 36-37, 38-39, 40-41, 42-43, 44-45. It is recommended to choose 1-2 sizes larger for wide or high instep feet.