Idea of Text Box Icon
The icon is an angular square, with smaller squares at the center of the left and right sides. Inscribed in the center is a block letter, upper case T. The icon represents a text box graphical user interface element, an element into which a user can input text.
This Text 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 6,100 icons, all in the same style and quality.