Alpinestars Nucleon KR-Celli Black Back Insert

The extremely lightweight, CE-certified KR-CELLi Protector insert features an articulated back shell plate for flexibility and riding fit, plus an advanced micro-structure cell design for efficient impact energy absorption and high levels of airflow.

Features; 

• The triple-segmented back shell plate is constructed from a high-performance polymeric material blend for optimized flexibility and excellent weight-saving properties.
• Unique cell microstructure designed for advanced energy absorption, adaptivity, maximum breathability, and airflow.
• Horizontal flexion groves allow for an adaptive fit in different riding positions.
• Soft comfortable airmesh on the body side of the protector offers maximum breathability and rider comfort.