Unique design in these plugs allow that they are compressed into the ear canal without touching them, sealing them completely and effectively plugs are reusable, and are made from slow recovery foam patented e - a - R tip foam you have proper shape and size to comfortably mold is to provide an effective barrier not require compression the platform of inclusion is useful to avoid touching the tip during placement the ear plugs with help to avoid losses and ensures the availability of the product where necessary, which makes it more comfortable for casual use. The exclusive design of the 3M™ EX - 01 - 002 plugs makes it possible that foam compresses easily so that stopper slide smoothly on the inside of the ear and expands slowly, getting an effective sealing in the majority of auditory canals. The insertion base allows you to manage them more easily.