Source: Wikipedia/Discovery channel
Dragon Skin is a type of ballistic vest made by Pinnacle Armor. It is currently produced in Fresno, California. Itís characteristic two-inch-wide circular discs overlap like scale armour, creating a flexible vest that allows a good range of motion and can allegedly absorb a high number of hits compared with other military body armour. The discs are composed of silicon carbide ceramic matrices and laminates, much like the larger ceramic plates in other types of bullet resistant vests.
The armour is available in three basic protection levels: SOV-2000, which has previously had certification to Level III protection SOV-3000, which is rated as Level IV by the manufacturer, but has not officially certified as such; and a rating-unspecified "Level V" variant not available to the general public.