Description:12PCSHonana Fluorescent Glow Butterfly Wall Sticker This Fluorescent Pigmentis environmentally friendly. Great decoration for bedrooms, nursery rooms, kids room, etc. Specifications: Brand: Honana Item: Fluorescent Sticker Shape: Butterfly Material: Plastic Color: Light Green Size: Received: 21cm x 29cm Finished: 18cm x 10cm x 1PCS+7cm x 4cm x 11PCSWeight: 15g How it works? It adsorbs light & glows in the dark. So you must put it in the sun to absorb much light. Or you can also turn on the lights tolet it absorb enough lamplight. When you turn off the light & go to bed, it will glow in the dark. Package Included:1 x 18x 10cm Honana Fluorescent Glow Butterfly Wall Sticker 11 x 7x 4cm Honana Fluorescent Glow Butterfly Wall Sticker