technology with the normal wristband but adding the glow powder . The powder can be added into the band body or the ink for the printed or debossed colorfilled style wristband. The glow powder is eco as well as the silicone material. 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 refpersonalized charm bracelets for girlfriendlecting the logo custom. Hope this can help you for the glow in dark rubber wristbands. A uv rubber wristband 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 rubber wristbands 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 custom-wristbands-australiacheap-custom-wristbands-no-minimum around the wrist can remind people of what it says. We make all the designs for free. If you need to put your logo on wristband, JPG, PDF or AI file is appreciated. Our designer is skilled to transfer it into the digital proof. We will make it to your satisfaction. All we do for designing is free no matter you place the order or not. Besides we can send you photo physical sample before mass production if necessary. Regular sizes of a silicone wristband are 6”(150mm) for toddler, 7”(180mm) for youth, 8”(202mm) for adult in circumference and 1/4”(6mm), 1/2”(12mm), 3/4”(19mm), 1”(25mm) in width. We make it all together 2mm thickness. Regarding with the circumference, it is the most important factor to choose size in our order. It is the average sizes for toddler, youth and adult. The direct way to choose size is to measure the size of your wrist before selecpersonalized charm bracelets for girlfriendting. We are always strict in quality of our product focusing on edge cutting, polluted mark and printed logo to make a best product for you.