Meets EN 352-2 and additional S, V, W, E requirements "The ""x"" imprint at the end of the earplug makes it easy to remove, while reducing pressure on the wall of the ear canal. The uvex com4-fit is smaller in size and, thanks to its ergonomic shape, comfortable for wearers with narrower ear canals. The uvex com4-fit has an outer layer that prevents foreign bodies from entering the earplug. The soft foam provides a high level of comfort even for extended periods of wear. It can also be used in lower noise environments."