Alpinestars A-4 Plasma White Chest Protector

Anatomical profile suitable for all off-road practices
Semi-rigid thermoplastic polyhedral structure chest protector and Nucleon Plasma back protector: lightweight, breathable, comfortable, adaptive, and protective.
Main features
Highly flexible Nucleon Plasma back protection, made of viscoelastic material based on bio-sourced polymers, flexible in all directions while dissipating impact energy.
Lightweight and highly ventilated, this protector offers excellent shock dispersion and absorption while ensuring maximum coverage regardless of riding position.
Lightweight and ultra-ventilated chest protection
The external shell design of the chest protector ensures structural resistance and performance under stress compared to flat or non-shaped surfaces
Flexible side fins of the chest protector follow the body contours for increased comfort and freedom of movement
Optional Race Kit - Compatible with Nucleon Plasma Extended Roost Coverage kit including upper and lower chest extensions, and additional Y-strap system for using the A-4 Chest without back protection
Highly perforated, adjustable, and removable rib and shoulder padding for increased protection against projections and impacts
Construction
Equipped with adjustable shoulder and side straps for optimal fit
Soft and removable thermoformed shoulder padding for increased rider comfort
Back protector lining provides a soft feel on the skin, while maintaining structure and reducing the risk of tearing
Ribbed lining ensures excellent air circulation and limits skin contact
Perforated 3D mesh chassis also provides additional protection against tire projections
Bionic Neck Support compatibility via BNS shoulder tabs.
Shock-absorbing, eco-friendly, and durable material, USDA bio-based certified
Back protection: EN 1621-2:2014 Level 1
Chest protection: EN 1621-3:2018 Level 1
Material composition
40% polyurethane, 25% ethylene vinyl acetate, 12% thermoplastic elastomer, 11% polypropylene, 10% polyester, and 2% other