Alpinestars Nucleon KR-3 Back Protector — M, Black

The Nucleon KR-3 back protector delivers advanced spinal protection with a single-injected lattice shell and viscoelastic PU foam for optimized energy absorption and breathability.

• Developed in three waist-to-shoulder dimensions to cover all body sizes.
• Lattice-structure back shell constructed from a high-performance polymer blend for optimized flexibility and excellent weight savings.
• Single injected lattice shell with an ergonomic design to absorb impacts while allowing maximum breathability and airflow.
• Nucleon PU foam on the central spine area for additional impact absorption performance.
• Additional convex design on the central hard shell provides the highest level of spinal protection.
• Horizontal flex grooves for an adaptive fit in all riding positions.
• Adjustable rib protector made from a high-performance polymer blend for extra side protection.
• Shoulder-blade padding extensions to guard the acromion bones and waist adjustment for a customized fit.
• Slim, vented kidney belt for added position stability and a custom fit, plus adjustable, detachable elastic shoulder straps with a snap-fit system for comfort.
• Compatible with the Nucleon KR-C and Nucleon KR-TB protectors. Back protector EN 1621-2:2014 Level 2.
• Composition: 52% polyurethane, 33% TPU, 7% polyester, 5% nylon, 3% other.

Designed for riders who want a balance of protection, comfort, and ventilation.