Nucleon Flex Pro Protection VestBack Protector - Ergonomically contoured dual zone outershellAdvanced polymeric blend with a solid cell structure coreSolid cell core framed by a more flexible 32 cell structureNucleon Flex technology layer on the central back zoneDivided Chest Protector - Unique new longer length for more protection coverage in critical areaLightweight, ventilated and ultra-comfortable technologyRigorously tested and certified for proven performance in extreme temperaturesChest and back protector held securely in position by the breathable, soft-touch perforated mesh chassis that also delivers maximum airflow for enhanced rider comfort