the glow powder . The powder can be added into the band body or the ink for the printed or debossed colorfilled style bracelet. The glow powder is eco as well as the silicone material bracelet. When absorbs enough strong light before being put in the dark, it glows blue, green or red depending on the style of the glow power. The glow will last for hours and gradually weaken. But when reabsorbs the light , it glows again like original shows. It is the most favorable item for the night event. It looks so good in the dark reflecting the logo custom. Hope this can help you for the glow in dark silicone bracelets. A uv silicone bracelet can transfer its color darker under sunshine when absorbing uv light. It is not only with good looking appearance but also indicating the strength of the uv index. So some uv silicone bracelets made as the indication with the ruler of levels of index. Wearing on the wrist to avoid long time staying under strong uv. So what makes it uv transfer ? The answer is the UV phosphor which use uv energy to open the sensitive molecular bond and make it jump from low energy to high energy level There will be a change from visible light to visible light, resulting in the changing color from light to dark. It become a uv silicone bracelet when the UV phosphor is put into the silicone mass and produce it a band. usb-wristband-wholesaleunder-armour-silicone-wristbands reach the authority standards. Such as Regulation (EC) No.1907/2006 , European RoHS directive 2011/65/EU and It’s Amendment Directives , Annex XVII of Regulation (EC) No.1907/2006 , US ―Consumer Product Safety Improvement Act 2008 , US ―Consumer Product Safety Improvement Act 2008 , US California Proposition 65 and Assembly Bill No.1108 and Germany GS Mark Certification — Polycyclic aromatic hydrocarbons . Some material that is harmful like Cr(VI) and Polybrominated Biphenyls & Polybrominated Biphenyl Ethers (PBBs & PBDEs), Bis (2-EthyylHexyl) Phthalate (DEHP), Dibutyl Phthalate (DBP), Benzyl Butyl Phthalate(BBP), Di-Iso-Butyl Phthalate (DIBP) can not be found or the content is much less than the standard request. breast-cancer-awareness-wristbandswhere-to-buy-wristbands the band solid, segment, swirl, glowing and uv transfer. The shape can be normal and figured. 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 diffbatman rubber wristbanderent 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 50pcbatman rubber wristbands free and 5pcs keychains free. Order 100pcs 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.