rength 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. custom-camo-silicone-wristbandscool-silicone-wristbands of unique brand-new, refurbished and second-hand goods such as books, movies, music and games, digital downloads, electronics and cocustom carabinermputers, household gardening supplies, toys, baby products, food, clothing, shoes and jewelry, health and personal care supplies, sports and outdoor. Supplies, toys, automobiles and industrial products. We can also buy custom rubber bracelet from amazon. Let me show you how to distinguish rubber wristband. First, the false silicone wristband is easy to suffer from deformation while the true one has good memory to snap back and relatively small permanent deformation. Second, the real silicone wristband touches smoothly with special surface treatment and easily stick with dust , hair and other impurities. Third, when it burned with fire, the false silicone wristband will come up with the black material on the edge while the true one shows white powder. And final, tell a reliable method to clean the wristband. Get it soak in warm water for 3-5min, rub a few and add the detergent if necessary. Then all done after drying by air. Large dicoucustom carabinernt offering now. Using coupon SAVE10, we offer 10% additional discount for the total price. Order over than 100 get 100pcs wristbands free & 10pcs keychains free. Order less than 100 get 50pcs wristbands free & 5 pcs keychains free.