Klepsydra Piasek na dole and other 86,400 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
The icon is a simplified, two-dimensional hourglass with all of its sand in the bottom chamber. Rectangles each form the bases of the icon, which are connected by a thin shaft of glass that tapers harshly at the middle. The section below the waist contains all of the sand.