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 Prisoner icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,700 icons, all in the same style and quality.