Healthy Material:It is made of plastic material,high-quality,convenient and safe. Universal Size:Our thermometer probe covers fit most digital thermometers,each cover measures 3.75 x 1.02 inches/ 9.52 x 2.6 cm Still Accurate:It does not compromise your digital thermometer's accuracy by using these covers. Easy To Use:Insert the thermometer into the cover along the direction of the on the package then peel off the cover. The thermometer covers:It contains 600 individual sealed probe covers instead of putting the bare thermometer probe in the mouth area to that you are using a sanitary and clean thermometer every single time. Features Color: white Material: plastic Size: About 8.8x2.5cm. Package Contents: 600 x Thermometer Covers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.