can come in many forms and grades. Some medical grade silicone is being used at your local hospital right now. That girl you just passed on the street... Something looked a little asymmetrical... What was it I wonder? Well, you get my point. Silicone is used in a lot of places. So what is the deal with the silicone used in the popular silicone wristbands? It"s a bonded polymer substance that custom bottle openerspossesses what the scientists (and very smart laymen) call "elastomeric qualities". These qualities lend the silicone various beneficial traits, such as being both resistant to water and a reasonable amount of heat. Prolonged exposure to the sun will make your silicone wristband sad, as this polymer does not like constant UV exposure. (If your head hurts, don"t worry. The hard part of this article is over. And if it makes you feel better, I almost passed out after writing that). You probably came here because you"re concerned that silicone may not be safe, right? Is this you: "I have kids. Is silicone safe for them to wear all the time? Is there anything toxic in it?" No, imaginary person! Silicone is a very common, safe product. It is free of lead and other harmful toxins. It"s also chemically inert, which means it will not react with other common chemicals your kids may find around your house. If it gets hot, it will not release any harmful fumes and if licked, it won"t transfer anything harmful to the quirky little licker. Silicone is not considered a hazcustom bottle openersardous waste. This unfortunately does not mean it"s biodegradable. The lifespan of this polymer is extremely long. But on the bright side? Silicone wristbands can be recycled after their lifetime as a fashion accessory has run its course. If you"re still thinking silicone might be too strange and exotic a material for your next merchandise endeavor, I"ll point out this: silicon is a naturally occurring element. It"s abundant in the sand and rocks outside your door. The silicone wristbands are made by the bonding of another pretty natural and accepted element: oxygen. The result may not seem all that natural, but it"s clear that it"s not dangerous and all studies show that it"s perfectly safe. rubber-wristbands ll 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 usd 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.