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450D shell + Hydraguard: 10K waterproof/breathable race protection
and a drop-tail design to stay tucked during intense rides
000mm waterproof/breathable membrane plus waterproof dry seat insert to stay bone-dry through powder roost and ice
With touchscreen-ready palms
Convenience and versatility come from the integrated drop‑down internal sun shield
Alpinestars S-M5 Action 2 Helmet Size:XX-Large 450D shell + Hydraguard: 10KAlpinestars approach to the development of the SM5 helmet stems from decades of dedication to rider safety and innovation in motorsports. Drawing from a deep well of technical expertise and a passion rooted firmly in motocross, the creation of the SM5 reflects Alpinestars commitment to pushing the limits of performance and protection. Like all Alpinestars products, the SM5 is the result of meticulous planning, cutting edge research, and the insight of
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