Ear plugs are inserted to block the ear canal. They may be premolded (preformed) or moldable (foam ear plugs). Ear plugs are sold as disposable products or reusable plugs.
Earmuffs block external sounds by covering the ears. They come with ultra slim ear cups or with multiple position headbands. The choices for earmuffs include dielectric constuction for electrical environments as well as high visibility earmuffs for low lighting or outdoor applications.