Suitable for most acoustic coil tube audio kits, suitable for left and right ears, just plug in to complete the connection. Good stretchability, the ear will not easy to deform and fade, reusable and durable for long time to use Even during strenuous exercise, the rubber ear molds can remain safe and will not block the ear canal. Features -Color:Black -Material:Rubber -Size:2.80X2.70X1.30cm/1.10X1.06X0.51in -The earplugs are made of rubber material and can be worn comfortably for a long period of time. -Rubber earplugs are with light weight, small size, let you have satisfying wearing feeling, bring you convenience. -Suitable for most coil tube audio kits, whether left or right ear, suitable for most kinds of people to use. -Special ergonomic design, these ear molds are very suitable for your ears, hearing fatigue. -Safe to your ears, the interphone ear plugs can reducing noise when your are talking Package list: 3 Pairs x interphone ear plugs