The Alpinestars Nucleon KR-3 CE Level 2 Motorcycle Back Protector is the latest generation of rider protection from Alpinestars and as per its predecessors has once again raised the standards, with its high levels of innovation and improved ergonomic design.CE Level 2 certified (EN1621_2:2014)Lattice structured back shell plateSoft Viscoelastic PU foam compoundSingle injected lattice structure shellConvex design on the central hard shellHorizontal flex grovesAdjustable rib protectorShoulder blade protective padding extensionsWaist adjustment for customised fit and slim vented kidney beltAdjustable/detachable shoulder strapsThe Alpinestars Nucleon KR-3 CE Level 2 Motorcycle Back Protector has a lattice structured back shell plate construction which has been made from high performance Polymeric material which has been blended for optimum flexibility and weight saving. The shell structure has been designed to absorb high impacts and allow maximum breathability and air flow, keeping the ri