T-IC Fusion Body Armor decreases damage taken by 10%

VersusTech Fusion AL Type IV Body Armor is 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.