This is the Puste pudełko icon for Windows 10. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.
It is a 3-dimensional box. The box itself appears to be open and empty, as there are 2 flaps open (one each on the left and right), and you cannot see anything inside the box. There is a horizontal line on the front face of the box, near the top, which indicates a handle.