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 ning of bracelet. We can make the band solid, segment, swirl, glowing and uv transfer. The shape can be normal and figcustom made keychainsured. We make it in different size. 202mm for adult, 190mm for women, 180mm for youth and 150mm for toddler and 1/4”(6mm), 1/2”(12mm), 3/4”(19mm), 1”(25mm) in width. 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 beatting bullying. Pink stand for supporting knowledge strength. Blue and white stand for one world one cause Blue and green stand for say no to sectarianism. No MOQ, NO Tax. Order less than 100pcs, get 50pcs free and 5pcs keychains free. Order 100custom made keychainspcs or more, get 100pcs free and 10pcs keychains free. All the free wristbands and keychains are same design of the one you order. 10% discount is being offered use coupon code SAVE10.