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 anspersonalized picture charm braceletswer 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. <personalized picture charm bracelets/br> n US 2005. It is the yellow “LIVE STRONG” silicone rubber wristband resisting cancer. LIVESTRONG rubber wirstband was adorned by Armstrong who suffer from cancer. He shows us the strengthen and brave facing the disease. Different band colors stand for different meanings. For example white for making poverty history and blue for beating bullying. Also we can also make our message to express our desire. So how to make it ? An easy way to custom silicone wristbands is going for the website by showing your idea and logo. Different size is available for adult，youth or baby. The logo can be printed, debossed or embossed as your request. Choose your favourite colors and make the band color solid, swirl or segment and even make it UV transfer or glow in dark.