Updated back protector further improves this advanced protection jacket, providing excellent safety, support and flexibility for motocros

• Impact and vibration protection upgrade accessory for use in Alpinestars leather jackets and suits.
  
• Polymer chest plate

• Ergonomic 5 plate construction contours to the natural curve of the back.
• Plate
  

The SMX Bionic Protection Vest utilizes Alpinestars Dynamic Force Dispersion (DFD) technology, offering exceptional levels of impact protection to the back