The Nucleon KR-Cell CiS is a high-quality chest protector, light in weight and high in level, with one specific element: four pushbuttons.
By means of those four pushbuttons you can attach this separate impact protector in a number of Alpinestars jackets. These are specially equipped for this purpose. The result is a chest protector (height adjustable) behind the central zipper of your jacket and attached left and right of that zipper. One protector for the complete chest area.
This lightweight protector has a lattice structure, which means a lot of sturdiness, but also leaves room for ventilation and breathability. The result is a relatively flexible unit that easily adapts to your personal anatomy. And flexibility is one thing, of course you also want effective protection. At micro level, of course, the materials used are those that score high in terms of energy absorption. Alpinestars and racing, they are connected, and this yields in this context again very good results. CE-approved, goes without saying.
Protectors are reusable, even after a fall, and can be washed and maintained easily.