f the earliest silicone bracelets. Silicone bracelets are also known as energy silicone bracelets and healthy silicone bracelets. Because it is not only a bracelet, wearing silica gel bracelets has the efficacy of mosquito repellent and health care, different colors represent different meanings. Silicone bracelets were first popular in the United States. The world"s first silicone bracelet is yellow "LIVESTRONG". The common purpose of all people wearing this bracelet is to fight disease and cancer and make life stronger. Since then, because of the advantages of environmental protection, non-toxic, tasteless, good elasticity and easy wear, silica gel bracelets have gradually developed into a popular jewelry, loved by young friends, and now the popularity has spread to the world. The meanings represented by the colours of all kinds of silica gel bracelets are as follows: White: make poverty history Yellow(LAF): livestrong Black+White(Nike): stand up speak up Blue(BBC radio): Beat bullying Pink(BCC): support knowledge strength Red(BHF): feel the pulse Deep blue/Blue+white蓝白: one world one cause/ tsunami Relief Blue+Green: say no to sectarianism montre-tommy-hilfiger-homme-bracelet-siliconeevent-wristbands-vancouver ink for the printed or debossed infil 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 reabcustom made keychainssorbs 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 thecustom made keychains 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.