Description r rThese UV beads are sensitive to sunlight and can change color dramatically when exposed to ultraviolet radiation, even on a cloudy day. The stronger the ultraviolet radiation, the darker the color. Made of plastic material, compact, easy to use, good for DIY jewelry making and bring you a better use experience. r rFeatures r r- Color: Random Color. r- Material: Plastic. r- Size: 0.80X0.80X0.80cm/0.31X0.31X0.31in. r- Color after ultraviolet radiation: Pink, orange, yellow, fuchsia, blue, indigo, violet. r- Unique design: Exposure to sunlight will change color, even on cloudy and rainy days. The more UV rays, the darker the color. r- Wide applications: Our color changing beads are very suitable for making necklaces, bracelets and more jewelry. r- Premium material: Made of plastic material, these beads are safe for skin and durable for long service life. r- Easy to use: The string is easy to thread through, allowing you to make various crafts and send to your family or friends. r- Educational significance: UV sensitive beads are also suitable for a variety of educational activities about UV awareness, party activities to bring children more fun. Packing list 1000 x UV beads