20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 cm Size guide EU 19 EU 21 EU 20 EU 22 EU 23 EU 24 EU 25 EU 26 EU 27 EU 28 EU 29 EU 30 UK 3 UK 4 UK 4.5 UK 5 UK 6 UK 7 UK 8 UK 8.5 UK 9 UK 10 UK 11 UK 12 IMPORTANT: Make sure you print this page at 100% scale. The best way to check is to measure the ruler on the left after printing. It should be exactly 20cm.