Alpinestars A-4 Plasma Chest Protector

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• Nucleon Plasma protector constructed from viscoelastic material engineered from bio-based polymers
• Pliable in all directions while maintaining the ability to dissipate impact energies
• Lightweight and highly ventilated outer shell design is based on geodesic polyhedrons
• Over-injected flexible side wings follow the body’s contours for superior comfort and freedom of movement
• Engineered to be compatible with the Nucleon Plasma Extended Roost Coverage kit which includes upper and lower chest extensions, and an additional Y-Strap System to use the A-4 Chest without the back protector
• Back tested and certified to EN 1621-2:2014 Level 1
• Chest tested and certified to EN 1621-3:2018 Level 1

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