M2/W31 M3/W41 M4/W51 M5/W61 M6/W71 M7/W81 M8/W91 4-61 22 8-102 31 12-141 46 14-161 55 16-181 613 819 1015 1213 131 149 166 181 201 3-42 5-61 7-81 8-91 9-101 11-122 12-131 13-141 15-161 UK 1.51 UK 36 UK 3.52 UK 48 UK 4.53 UK 511 UK 5.56 UK 610 UK 6.53 UK 73 UK 82 UK 92 UK 121 UK 2.52 UK 23 28 inch1 29 inch1 10.5 child1 11 child1 11.5 child1 12 child1 12.5 child1 13 child1 13.5 child1 UK 11 0-3m1 6-9m1 One Size4 XS4 S6 M7 L6 XL2 2XL1 SB1 MB2 31 inch1