This icon has an shape that looks just like a cardboard box with opened flaps at the top. There are two triangle shapes that are sitting inside of the open box.
This Open Box 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 5,500 icons, all in the same style and quality.