Body armor

Body Armor is a form of bullet-proof vest usually worn in the military. The body armor usualizes mitigates damage from regular weapons-fire from any part of the body outside of headshots.

Usage
During the San Hieronymo Takeover, Big Boss's resistance can procure the body armor at the Security Base. The FOX Unit Lieutenant Cunningham also wore body armor.

Zanzibar Land utilized body armor of the Silent Partner Special brand during the events of the Zanzibar Land Disturbance. Solid Snake later procures one of the Silent Partner Special body armors for himself during his mission.

Solid Snake managed to procure some body armor at basement 2 of the Weapons Storage Building.

Raiden, during his mission in the Big Shell, utilized this.

In-game description
"Ballistic wear which lowers damage from hits other than headshots. Effect lasts as long as it's worn."

- Body armor description from Metal Gear Solid: Portable Ops