Sizing Information:
Choose a jacket size based upon what you normally buy in men’s clothing. If you want to measure yourself to help pick a size, have a look at Alpinestars’ sizing chart. And for those who may have a bit of a belly, we encourage you to consider our estimated max belly sizes listed below. Choose a jacket size that will accommodate both your chest and your belly.
| Alpha Size |
Max Chest Size (inches) |
Max belly size (inches) |
| Small |
38-40 |
35 |
|
Medium |
40-42 |
38 |
| Large |
42-44 |
40 |
| XL |
44-46 |
42 |
| XXL |
46-48 |
44 |
| XXXL |
50-52 |
46 |
| XXXXL |
52-54 |
48 |
The One-O-One offers bold sport styling in a full featured leather jacket. The jacket has two zippered vents hidden in the upper chest area, and one large rear exhaust vent. Also, the back sides of the sleeves are perforated. This should provide pretty good air flow for warm weather. In the winter you can use the removable insulated vest. The vest is a notch above most. It appears to be made of an aluminized fabric (kind of high tech and expensive looking). For protection, you get CE “turtle shell” type armor pieces and a foam back pad. Take the “View Larger Pictures” link above to see these and other features in detail.
