This is the Koło ratunkowe 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.
The Icon for Lifebuoy is a round circular ring. There are four rectangular pieces on top of the ring, evenly spaced at the top and bottom and left and right. The ring is on top of an object with rounded corners that make half circles between each rectangular piece.