It is a logo showing that the direction is up. It has a long, rectangular shape that looks like a beam. Two arrows are situated on the top of the beam that are pointing up.
This This Way Up 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 6,000 icons, all in the same style and quality.