Alpinestars Nucleon KR 1 Celli back protector

The Alpinestars Nucleon KR-1 Celli back protector insert offers superior safety and comfort for riders. Its innovative cell structure efficiently absorbs impact energy while maximizing airflow for breathability. Designed with a flexible, articulated back shell and horizontal flexion grooves, it adapts seamlessly to your body and riding positions. The lightweight, ergonomic design ensures comfort on long rides, and its optimized fit across three sizes guarantees comprehensive protection