Reusable plugs are easy to insert, with self-adjusting foam that expands to fit the ear canal. They are premolded with grip stems for hygienic insertion, and washable for extended wear. An air pocket in the tip offers additional comfort and soft, flexible flanges provide a superior seal and fit in most ear canals. Reusable ear plugs can be hand washed and used again and again. Ear Plugs, Corded, Flanged, 27dB, PK50