Idea of Box Important Icon
The icon is shaped like a fully circle. Inside of the circle going down the middle is a thin vertical rectangle shape with a square underneath. Both shapes resemble an exclamation point when put together.
This Box Important 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 6,100 icons, all in the same style and quality.