bulletproof vest
A vest worn to protect the torso from bullets. Often used in security, military, or police contexts. Compare 防弾チョッキ, which is a slightly older term.
See also: 防弾チョッキ (ぼうだんチョッキ)
The police officer was wearing a bulletproof vest.
最新の防弾ベストは軽くて動きやすい。
The latest bulletproof vests are light and easy to move in.