The inside sole measurements may slightly vary depending on the footwear. However, here are the approximate inside sole measurements for each size:
Size UK 3 / US 5 / EU 36 / AU 5: approximately 23 cm
Size UK 4 / US 6 / EU 37 / AU 6: approximately 24 cm
Size UK 5 / US 7 / EU 38 / AU 7: approximately 25 cm
Size UK 6 / US 8 / EU 39 / AU 8: approximately 26 cm
Size UK 7 / US 9 / EU 40 / AU 9: approximately 27 cm
Size UK 8 / US 10 / EU 41 / AU 10: approximately 28 cm
Hope this helps! Should you have any queries or require additional assistance, please don't hesitate to contact us.