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Designed specifically for off-road riding, the Alpinestars A-4 Plasma Roost Guard offers advanced protection with a focus on comfort and flexibility. The semi-rigid thermoplastic polyhedron chest protector features an over-injected flexible side wing design that contours to the rider’s body, providing unrestricted movement and a secure fit. Its lightweight construction ensures maximum ventilation, allowing heat dissipation during intense riding sessions. The highly perforated, impact-absorbing outer shell is engineered for structural strength and durability, offering reliable defense against roost and impacts. The inclusion of adjustable shoulder and side straps allows for a customized fit, while removable soft thermoformed padding enhances comfort during extended wear. The back protector, constructed from viscoelastic biobased polymers, is highly pliable in all directions and dissipates impact energy effectively, offering excellent coverage without adding bulk. Its ribbed lining promotes superior airflow and reduces skin contact, minimizing discomfort and moisture buildup. Compatibility with the optional Race Kit, including upper and lower chest extensions and an additional Y-Strap System, provides versatility for different riding preferences and additional protection. Constructed from USDA-certified, eco-friendly materials, the ALPINESTARS A-4 Plasma Roost Guard balances sustainability with high-performance impact absorption. Whether tackling rough terrain or racing, this protector ensures optimal safety without sacrificing mobility or breathability, making it a reliable choice for serious off-road riders.
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