UNIVERSAL DIGITAL THERMOMETER PROBE COVERS -- Unlike other probe covers, this one measures 4.7"x1.1",which allows you to use it on most digital thermometers,they won't be too short to get stuck in the armpit, they're long enough to cover and protect your thermometer from being contaminated when you do rectal or oral temperatures WHY YOU'LL NEED THERMOMETER COVERS -- a Clean and Sterile Thermometer is crucial. With Disposable Covers you are able to Keep Your Thermometer Clean Without Alcohol and you can keep it Sterile Without Messing With Liquids EASY TO USE -- Insert the probe tip into the cover,peel off the paper front and back seal and dispose of it after measuring the temperature,The thermometer will stay clean! REMAINS ACCURATE -- Using these covers does not compromise your digital thermometer's accuracy