This is a Bulletproof Vest icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 12,600 icons, all in the same style and quality.
It is like a shirt, but sleeveless. There is a big square in the middle that is presumably for the armor part of the vest, and it takes up much of the "stomach" area. Both sides have two sets of small squares that are aligned on top of one another on either side of the vest.
Related to Bulletproof Vest Icon
Related icons are the icons with matching tags, as well as all military icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors