Features: UV color changing stickers, 8 per sheet, water and sweat resistant, with a reliable self-adhesive backing that will not easily fall off.! Made from quality material, the UV color changing technology reacts to sunlight and changes color to remind you when to reapply sunscreen. Perfect for parents with little children who want to keep their little babies safe from the sun harmfully ray. These stickers are a must-have for any parent who wants to ensure their child safety in the sun. These stickers are perfect for mother, relatives, friend, girlfriend, or anyone who likes beauty, let them enjoy the sunshines without worrying about sunburns. Specifications: Material: Self-adhesive Label Paper Size: Approx. 100x52mm/3.94x2.05inch Quantity: 8pcs/sheet Package Includes: 8Pcs/sheet Color Changing Stickers note: Only outdoor UV detection stickers, without sunscreen function. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.