The image is of two hands that are grasping bars. The two bars are vertical and they are crossed by one horizontal bar. The hands are just fisted around the bars but no other body parts are shown.
This is a Prisoner 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 13,300 icons, all in the same style and quality.