I have these on my stethoscope, I went into nursing and recently switched to medical assisting; my college sells Prestige Medical Stethoscopes and Blood Pressure Kits and that's where I purchased mine. These tips are soft and easy on your ears. I prefer the black soft tips over any other kind. If you have a stethoscope and need great soft ear tips, go with these. Prestige Medical is a brand I love and trust. I highly recommend these!