The soundproofing effect of the earplugs prevents sleep from being disturbed by ambient noise.The heating element warms your ears and gives you peace of mind before going to bed.Recommended for those who feel the pressure of work, worry and think about various things, and those who are worried about the surrounding sounds when they fall asleep.Feel stressed by the noise of neighbors and cars, and find it difficult to fall asleep.How to use:Check which earpiece fits your ears, S or M, and attach it to the main unit.Take out the heating element from the aluminum bag Insert the heating element into the socket of the earplug body and push it in so that the heating element fits firmly into the earplug body.Hold the cut part of the main body in your hand so that it is behind you, and set it on your ear.Adjust so that the heating element is in close contact with the hollow of the ear.. Color: N/A, Materials: Earplugs: Elastomer, Size: N/A, Care: N/A