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Alpinestars Nucleon KR-CELLi ProtectorThe extremely lightweight, KR-CELLi protector insert features a jointed back shell plate for flexibility and fit as well as an advanced microstructure cell design for efficient impact energy absorption and high air flow.FeaturesBack ProtectionThe ultra-light Nucleon KR-CELLi protector insert is developed in three waist shoulder dimensions for all body sizes. The triple blesss. The triple blesses. The back shell plate consists of a high-performance polymer material blend for optimised flexibility and excellent weight saving. The structure of the back protector and the structure change from the middle to the outside ensure the perfect balance between power distribution and energy absorption. Unique cell microstructure for advanced energy absorption, adaptability, maximum breathability and air flow. Ergonomic protective plate adapts to the natural curvature of the back and ensures optimal Horizontal fit when driving. Horizontal fit when Flexible grooves for adaptive adjustment in different driving positions. Soft, comfortable airmesh on the body side of the protector provides maximum breathability and driving comfort. Protection levelLevel 1 (EN1621-2:2014). Dimensions: Height: 144 - 167 cm. Waist: 68 - 76 cm. Waist: 38 - 43 cm. Height: 164-164 183cmWaist:76-88cmWaist-to-Shoulder:43-48cmLHeight:180-195cmWaist:88-111cmWaist-to-Shoulder:48-51cm