This Czaszka 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.
An empty skull, mandible missing. Clean of flesh, teeth missing, this skull has been uninhabited for a while. Staring blankly ahead at us, with empty, sightless eye sockets, and an inverted heart for a nose cavity.