The Medelast Soft Foam Ear Protection Plugs function through a combination of physical barriers and sound absorption. Made from materials like polyurethane foam, they have a porous structure. When inserted into the ear canal, they first need to be rolled into a thin, small shape. As they expand back to their original form, they fill the ear canal, creating a physical blockage. This blockage stops sound waves from easily entering the ear. The porous nature of the foam also plays a role. High - frequency sound waves, such as voices or machinery noises, get trapped and absorbed within these tiny pores. This absorption process reduces the intensity of the sound before it reaches the inner ear. For example, in a busy office with keyboard typing and chatter, the plugs can reduce the noise level significantly, allowing for a quieter environment.
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