It is an icon with lines that outline the chest and upper portion of arms on the human body. There are two circles right where the shoulders would be. Each circle has multiple dots inside of them.
This Shoulders 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.