This Wyczyść filtry 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 4,300 icons, all in the same style and quality.
The icon is shaped like an upside down triangle missing the point but the corners are not pointed they are flat. Where the tip of the triangle should be is a blade like shape. To the bottom right of that is an X.