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Caterpillar Adult Boot Sizing Guide for Men & Women

   AU/UK Mens Size      AU/US Womens Size   US Men Size   EU Size
3 6 4 36
4 7 5 37.5
5 8 6 39
5.5 8.5 6.5 39.5
6 9 7 40
 6.5 9.5 7.5 40.5
7 10 8 41
7.5 10.5 8.5 41.5
8 11 9 42
8.5 11.5 9.5 42.5
9 12 10 43
9.5 12.5 10.5 43.5
10 13  11 44
10.5 13.5 11.5 44.5
11 14 12 45
12 13 46
13 14 47