US UK EU Length (mm) Wide Girth (mm)
8 7 40 257.54 261.65
9 8 42 266.00 268.00
9.5 8.5 42.5 270.23 271.18
10 9 43 274.46 274.35
10.5 9.5 44 278.69 277.53
11 10 44.5 282.92 280.70
11.5 10.5 45 287.15 283.88
12 11 46 291.38 287.05
13 12 47 299.84 293.40