Features: Quality material: The sea mini notepads are made of paper with clear printing, safe and reliable. The pen is reliable and safe to use, the ink disappears in the dark, and the written content can be seen after the finger light is illuminated. The invisible ink party favors can bring you a pleasant use experience. Specifications: Main material: paper, plastic Color: multicolor Size: as shown in the pictures Package includes: 24 x Sea notepads 24 x Invisible ink pens 24 x Finger lights Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Suitable for people over 6 years old, and it's recommended to use under the supervision of adults in case of choking risk. The battery life is related to the frequency and length of use of the product. If the frequency of use is high, and one-time use long, the battery life will be relatively short.