ial 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 iscustom friendship braceletsw.24hourwristbands.ca/custom-friendship-bracelets">custom friendship bracelets 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. ing. When it is extruded the silicone , the logo will be on the wristband. Finally we will fill it with the silicone based ink which is long lasting. A mold is needed for colorfilled wristband. We make a mold and set it in the machine, the high temperature of about 200℃ will solidify rubber into the sharp of bracelet. let"s see how the mould come into being. We can make the serial, QR code or bar code printed on the colorfilled wristband. But need to be wider wristband as 25mm. We can personalize the wristband size as well. The normal size is 202mm length for adult, 190mm for women, 180mm for youth and 150mm for child. The width can be 6mm, 12mm, 15mm, 19mm or 25mm. If these not fit you, then you probably need to pay extra for certain size.