ALPINESTARS Nucleon KR 1 Celli back protector

The extremely lightweight Nucleon KR-1 CELLi 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. Key Features: - The back protector’s design changes from the centre towards the outside providing the perfect balance between energy absorption and flexibility. - Horizontal flexion grooves for an adaptive fit in different riding positions. - Soft comfortable padding on the body side of the protector offers breathability and rider comfort. - Racing suit compatibility. Construction: - The super lightweight back protector insert is developed in three waist-to-shoulder dimensions in order to cover all body sizes. - High performance polymeric material blend Cell Structure for optimized flexibility and excellent weight saving properties.