REV'IT! SEESOFT Back Protector Type KNCE Level 2 back protector insert is designed to absorb variable impacts without compromising on comfort, ventilation or freedom of movement. The highly impact resistant blend of Nitrille and Polynorbornene rubber results in a memory foam that is multi impact rated and CE certified to the highest level (EN 1621 2: 2003 level 2). In the case of severe angular impact, the individual Memory foam layers will shift relative to one another, resulting in