Feature:1. UV Detection: This sun cream sticker helps prevent sunburn and sun damage by showing you if you're applying enough sunscreen and indicating when you need to reapply.2. Reusable: This sunblock detection patch features a reusable design, the color change lasts all day, which is very convenient and practical.3. Safe And Comfortable: This sunblock patch uses a safe adhesive to ensure that the patch is comfortable and safe. It is suitable for children and adults without any concerns.4. Easy To Use: This UV detecting patch is very easy to use, you just need to peel off the sticker and then stick it on your cheek, arm or other skin surface of your body.5. Wide Application: This UV detection sticker has a wide range of applications and is suitable for beaches, parks, picnics, hiking and other outdoor activities.Specification:Item Type: UV Detection StickerMaterial: PVC, Color Changing PaperQuantity: 24PCS x 3Expiration Date: 3 Years.Package List:72 x UV Detection Stickers