to measure the size of your wrist before selecting. If all the above sizes do not fit you, it is available for custom size also. Glowing wristband will glow in dark after absorbing light come from sunshine or lamps. It glows green, blue or red yet the wristband color will not be same as glowing. The wristband color of glowing can be normally white, green, blue, red, yellow, pink and purple, but it must be light enough otherwise glowing will be hard to release. The glowing usually last 3 hours and gradually weaken. But it is not the end. It recovers when absorbing light energy again. So it is recyclable. The logo can be colored of all pantone colors, normally you can select only one color for the logo or message on one design. We can check what the color looks like on the molding step. There is no options for multicolor logo. sequentially-numbered-silicone-wristbandspersonalised-silicone-wristbands-uk e 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 wrubber message braceletshen absorbing uv light. It is not only with good looking appearance but also indicating the strength of rubber message braceletsthe 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.