Altra Men's Size Chart

USA UK EUR
8 7 41
8.5 7.5 42
9 8 42.5
9.5 8.5 43
10 9 44
10.5 9.5 44.5
11 10 45
11.5 10.5 46
12 11 46.5
12.5 11.5 47
13 12 48
14 13 49