The Nucleon KR-2 is a premium adventure touring back protector that is CE certified Level 2 to the latest back protector standard revision (EN1621-2:2014). Extremely lightweight, highly breathable and incorporating reinforced protection this back protector is optimized for comfort on longer journeys. An innovative fusion of energy absorbing viscoelastic memory foam with articulated vertebrae protection. The Nucleon KR-2, a flexible and ergonomically profiled back protector made for performance.