Amaonm Removable Vinyl Glow in The Dark Wall Decals Luminous Light Quotes Live Love Laugh & Butterfly Wall Stickers Murals Decorative for Kids,Children,Girls,Boys,Babys Bedroom Playroom Material: Waterproof Vinyl, pass EN71-3 certificate, eco-friendly and safety to use. This product needs to absorb light in daytime, then it will glow automatically in the darkness. Daytime color is light green, green luminous night for children's rooms. The product needs to extinction during the day, at night to light emission Sheet size: 20*56cm. Finish size:60*60cm Note:APPLIES ON WALLS(ANY DRY, SMOOTH,DUST FREE SURFACE) Attention: This item is a DIY product. It comes with only layout sheet, it shold be put together by yourself with transfer film attached.