Engineered to offer the best protection to MTB riders, the low-profile, A-6 PLASMA Chest Protector provides high impact protection, perfect for all gravity activities in the mountains or at the bike park. Alpinestars’ innovative Nucleon PLASMA back protector offers high levels of ventilation and flexibility thanks to its structural composition that is highly adaptable and contours perfectly to your body and offers maximum comfort when riding your bike. The adjustable quick release system provides a customized fit, while keeping the protector securely in place when on the trails.