These temperature strips are made of liquid crystal and PET material, safe and reliable to use. Adhesive on the back, just peel it and attach to the outside surface. Highly accurate temperature readings, easy to read and portable to display. Features -Color:Assorted Color -Material:PET,Liquid Crystal -Size:4.00X2.00X0.10cm/1.57X0.79X0.04in -The secure adhesive of the temperature strip ensures that it stays firmly in place. -It provide accurate and reliable readings of the temperature of the saline solution used for irrigation. -With its easy-to-read display, this temperature measuring strip is a convenient and practical tool for anyone who regularly uses saline solution for . -The pack contains enough strips, each designed to adhere comfortably to the nose rinsing bottle and provide precise temperature readings. -Whether you're using it for personal use or in a clinical setting, this temperature measuring strip is a must-have for daily use. Package list: 30 x Temperature Strips