Omega Armour XOS-7

Omega Armor XOS-7 decreases damage taken by 30%

The VersysTech Omega Armor Mark Seven is an early prototype combat exoskeleton made of an imbricated overlapping configuration of carbon nanotubes. Combining these nanotubes with recombinant spider silk biotitanium discs encased in an armed textile hoursing that connects all flexible joints, the body armor is very light and flexible while providing protection against armor-piercing ballistic weapons

You can increase its effectiveness by finding Armor Tanks.

Trivia

 * In Chair Entertainment and Epic games' Infinity Blade games, this armor is featured