| Size | M |
|---|---|
| Brand | Alpinestars |
| Design | Graphic |
| Shell Construction | Polycarbonate, Thermoplastic |
| Type | Off-Road |
| Department | Men |
| Closure | Double D Style |
| Color | Gray |
| Model | Alpinestars SM3 RADIUM |
| Features | All Seasons |
| Finish | Matte |
Check the listing for details. NEW Alpinestars SM3 RADIUM Dirt Bike MX Motocross Helmet Matte Gray All Sizes. Color: Gray, Condition: New with tags. Listed at 259.00 USD. This layer essentially acts as a slip plane to mimic the brain’s own low-friction cerebrospinal fluid, which is the body’s natural defense against oblique impacts.
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