A NIJ Level IV stand-alone armor plate, SAPI cut and Multi Curved, compatible with most body armor vests and plate carriers out there. As a Stand Alone plate, this is an easy choice when you want the highest level of protection without having to think about soft armor backers. One plate in the package.
CPE is a large-scale manufacturer of protective gear. They supply stuff to the Finnish military and law enforcement institutions both domestic and foreign. Finland is a country of high wages and high precision & quality - you can probably get cheaper plates made in China (provided you find a webshop that actually delivers), but this is a plate you can actually trust your life in. The manufacturer's warranty is six years from the date of manufacture.