We found these boots to fit about 1 size larger than the stated size!
You can use the chart below to choose a boot and we think the chart is representative of the US shoe conversion. If you’ve determined your size in past Alpinestars sport boots, you most likely need to size down one size. I’d consider the width of the men’s sizes to be normal to slightly wide (D or E). I’ve always found this style boot easy to fit because the foot has a nice wide toe which is comfortable.
Euro | Men’s US | Women’s US | Our Men’s US size estimate |
36 | 3.5 | 5 | 4.5 |
37 | 4 | 6 | 5 |
38 | 5 | 7 | 6 |
39 | 6 | 8 | 7 |
40 | 6.5 | 8.5 | 7.5 |
41 | 7.5 | 9 | 8.5 |
42 | 8 | 10 | 9 |
43 | 9 | 11 | 10 |
44 | 9.5 | 11.5 | 10.5 |
45 | 10.5 | - | 11.5 |
46 | 11.5 | - | 12.5 |
47 | 12 | - | 13 |
48 | 12.5 | - | 13.5 |
49 | 13.5 | - | 14.5 |
50 | 14.5 | - | 15.5 |