Here you can find hard ballistics according to the protection class SK4 or NIJ level iv. These ballistic protection plates are an important component when it comes to trauma protection with large caliber ammunition. SK4 plates and standalone plates are inserted into the ballistic slots of body armor and other tactical equipment such as plate carriers.
The ballistic plates protect the chest and back area at the level of the heart. With so-called side plates, they additionally increase their body protection. These plates are placed in cummerbunds of vests and plate carriers.
For more information on the subject of hard ballistics, see for example this detailed article on ballistic protection classes.