normal bracelet but adding 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 metal carabiner clip keychainmg title="wristband resources" alt="wristband resources" src="https://www.silicon-wristband.com/images/2019/171124_2487.png" width="350" height="350"> Morse code is a time-interrupt signal code, which expresses different letters, numbers and punctuation symbols in different order. It was invented in 1837 by American Samuel Morse Morse code, an early form of digital communication, which played an important role in the early radio and was known to every radio communicator. As a result of advances in communication technology, metal carabiner clip keychainMorse codes were discontinued in 1999. We can customize bracelet with the morse code on. The band can be solid, swirled, segmented, glowing and UV transfer. Morse code can be printed, colorfilled, embossed printed. Regular sizes of a rubber bracelet 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.