This Metka z ceną 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.
This is a very simple icon of a price tag. The tag is standing on one corner. It's made of up a rectangle shape with rounded corners that tapers to a triangular point on one side. There is a circle inside of this triangular point that represents where one might tie a string to hang the tag on something.