Features: 1. 100% brand new and high quality 2. Luminous and can be removed. Persistent don't fade. 3. Moth-proofing, moistureproof, mouldproof, beautification adornment 4. If you are interested in astronomy, it will be a great sticker for you Material: Environmentally friendly PVC ( 5pcs ) Light Time:If it was absorped light in 30 minutes, it will light 4-6 hours This product needs to absorb light in daytime,then it will glow automatically in the darkness.