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and race-focused fit
Perforated Microfiber Upper – Delivers optimal ventilation without sacrificing durability
50ms Deployment Speed – Fast enough to inflate before first impact
Suitable for all-around sportbike use
featuring a sharp fusion of metallic red
Alpinestars Nucleon Flex PROi Full Back Protector Insert – Transparent Smoke/Red SP Connect and race-focused fitAlpinestars Nucleon Flex PROi Full Back Protector Insert Transparent Smoke RedDesigned for riders who demand uncompromising protection without sacrificing comfort, the Nucleon Flex PROi is Alpinestars top tier back protector insert. Built to seamlessly integrate into compatible Alpinestars jackets and suits, it delivers CE Level 2 certified impact absorption in a flexible, lightweight form. Featuring an advanced honeycomb design, the PROi offers