ilicone wristband. A UV silicone bracelet can transfer it’s color darker under sunshine when absorbing UV light. It transfer to purple or blue normally which indicating the strength of the UV index. Wearing it on the wrist is a good way to avoid long time staying under strong sunshine. We add UV powder which is also green as silicone in production. The UV powder is kind of photochromic material. We use it to make this change. Photoreceptor color is irradiated by ultraviolet or sunlight, absorbs ultraviolet or sunlight, and produces changes in color. When it loses ultraviolet or sunlight, it returns to the original color. Photoreceptor products, after sunlight or ultraviolet radiation, can absorb the energy of the sun or ultraviolet rays, produce changes in the molecular structure, lead to changes in the absorption wavelength, and produce color changes; when the sun or ultraviolet energy is lost, the original molecular structure is restored and the color of the cost is reduced. Application of photosensitive discoloration material: coating, suitable for various surface coating products, including PMMA spray paint, ABS spray paint, PVC spray paint. Ink, printing of various materials, including fabric, paper, synthetic film, glass, etc. Plastic products, suitable for various kinds of plastic PP, PVC, ABS, silicone rubber and other materials, such as the ejection, out of shape. waterproof-wristbands-for-eventsevent-wristbands-walmart s, Corporate Trade Shows, Political Campaigning or Memorials. A wristband around the wrist can remind people of what it says. Silicone bracelets is one of the most popular ornament recent years. An easy way to custom silicone wristbands is going for the website by showing your idea and logo. Different size is available for adult，youth or baby. The logo can be printed, debossed or embossed as your request. Choose your favourite colors and make the band color solid, swirl or segment and even make it UV transfer or glow in dark. Different color of the bracelet has different meanings. Band color white stand for making poverty history. Yellow stand for livestrong. Black and white stand for standing up and speaking up. Blue stand for custom key lanyardbeatting bullying. Pink stand for supporting knowledge strength. Blue and wcustom key lanyardhite stand for one world one cause Blue and green stand for say no to sectarianism.