Alpinestars A-4 Plasma Roost Guard Black/Red/White M/L

Description

The Alpinestars A-4 Plasma Roost Guard in Black/Red/White, size M/L, is anatomically profiled for off-road riding. Featuring a semi-rigid thermoplastic polyhedron chest protector and a Nucleon Plasma back protector, this guard is lightweight, ventilated, and engineered for maximum comfort and protection. The highly flexible back protector is constructed from viscoelastic biobased polymers for superior energy dissipation. The chest armor’s ultra-vented design ensures both structural strength and breathability. Flexible side wings, perforated rib and shoulder padding, and adjustable straps provide a customizable fit and coverage. The guard is compatible with Bionic Neck Support and optional extended coverage kits. Certified to EN 1621-2:2014 LEVEL 1 (back) and EN 1621-3:2018 LEVEL 1 (chest), it offers advanced impact absorption and eco-friendly construction.