10 Small (S) Outer Diameter (8mm)....Height (12mm) Soft Replacement Mushroom Domes Eartips Earbuds----- Compatible with the Following Etymotic In-Ear Earphones :.. Etymotic mK5.. Etymotic HD5 Safety.. Etymotic ER 4 MicroPro.. Etymotic ER4 SR.. Etymotic ER4 XR.. Etymotic etyBLU2 .. Etymotic ETY COM.. Etymotic ETY kids.. Etymotic HF Series:.. Etymotic hf5.. Etymotic hf3.. Etymotic hf2.. Etymotic MC Series:.. Etymotic mc5.. Etymotic mc3.. Etymotic mc2.. Etymotic Sound Amplifiers:.. Etymotic The BEAN... Etymotic T-coil BEAN Quiet... Etymotic Electronic Earplugs:... Etymotic MP 9-15 Music Pro.. Etymotic GSP 15 GunSport Pro.. Etymotic HD15.. Etymotic EB15 LE BlastPLG... Product Description: -Made of very soft material for all day comfortable wearing. -Amazing Noise Isolation: Close the music in and Keep the madness out. -Water washable and antistatic, removable and replaceable. -Perfect and comfortable for your ears, left and right. -You can also use them, to provide better hygiene - when you change often. -In-Ear Earphones or Headset not included!----- Instructions to Install Ear tips: With one hand hold the ear tip and the other, the In-Ear Earphone Driver. Place the Driver of the Earphone in the edge of the ear tip canal. Apply pressure and with a circular motion, twist with one hand clockwise and with the other the opposite direction, until the ear tip has fully covered the Driver of the Earphone. Once you have put them on properly, they will stay on securely. Also to help with installation, you can slightly moisten the rim of the ear tip canal, and repeat the process. Make sure you just moisten the ear tip, do not apply a lot of water, just a drop is enough, so you do not get the speaker driver wet