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US sizes and measurements (in mm)
Size Width Length Width
From To From To
4-4.5 Narrow 221 225 81 84
Regular 221 225 85 89
5-5.5 Narrow 226 230 83 86
Regular 226 230 87 91
6-6.5 Narrow 246 250 88 93
Regular 246 250 94 102
7-7.5 Narrow 251 260 90 95
Regular 251 260 96 104
8-8.5 Narrow 261 265 91 96
Regular 261 265 97 105
9-9.5 Narrow 266 270 93 97
Regular 266 270 98 107
10-10.5 Narrow 271 280 95 100
Regular 271 280 101 109
11-11.5 Narrow 281 285 97 102
Regular 281 285 103 111
12-12.5 Narrow 286 290 99 104
Regular 286 290 105 113
13-13.5 Narrow 291 300 101 106
Regular 291 300 107 115
14-14.5 Narrow 301 305 103 108
Regular 301 305 109 117
15-15.5 Narrow 306 310 105 110
Regular 306 310 111 119
16-16.5 Narrow 311 320 107 112
Regular 311 320 113 121
17-17.5 Narrow 321 325 109 114
Regular 321 325 115 123
US sizes and measurements (in mm)
Size Width Length Width
From To From To
6-6.5 Narrow 145 150 59 62
Regular 145 150 63 67
7-7.5 Narrow 151 160 61 64
Regular 151 160 65 69
8-8.5 Narrow 161 165 63 66
Regular 161 165 67 71
9-9.5 Narrow 166 170 65 68
Regular 166 170 69 73
10-10.5 Narrow 171 180 67 70
Regular 171 180 71 75
11-11.5 Narrow 181 185 69 72
Regular 181 185 73 77
12-12.5 Narrow 186 190 71 74
Regular 186 190 75 79
13-13.5 Narrow 191 200 73 76
Regular 191 200 77 81
1-1.5 Narrow 201 205 75 78
Regular 201 205 79 83
2-2.5 Narrow 206 210 77 80
Regular 206 210 81 85
3-3.5 Narrow 211 220 79 82
Regular 211 220 83 87
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