Safety 1st Disposable Digital Thermometer Covers offer a sanitary, practical option when taking baby's temperature. Simply slide the one-time use plastic cover on the thermometer, peel down the paper backing and proceed as usual. The Safety 1st Hospital's Choice Disposable Thermometer Covers features: Includes 30 covers Offers a sanitary option and clean probe tip when taking baby's temperature Slide the plastic cover on the thermometer and peel down the paper backing Disposable; one-time use Fits most digital thermometers Length: 3.75 inches Package Weight: 0.7 oz