is very small amount added and green to human. The glow will fade gradually in about 3h depending on how much light it absorbs. It is the best one for night event. Such music show, night walk and so on. The logo can be same as regular debossed, embossed or printed on the glowing wristbands. After exposure to natural light, fluorescent light, and ultraviolet light, the phosphor can store the light energy, stop the light and release it slowly in the way of fluorescence, so the light can still be seen at night or in the dark, lasting for hours to more than ten hours. The luminescent powder can be automatically lit in the dark. The main component is rare earth, which belongs to inorganic materials. The luminous powder first absorbs silicone bracelets wholesalea variety of light and heat, converted into light energy storage, and then automatically luminescence in the dark, by absorbing all kinds of visible light to realize luminescence. The product does not contain radioactive elements, and can be used indefinitely, especially for short wave visible light, sunlight and ultraviolet light (UV light) under 450 nanometers. Accept the ability. id-wristbands-for-eventsentry-wristbands-for-events We can print bar code, QR code or unique serial number together with some detail of the medical institute. Usually the wristband width need at least 15mm so that the code is clear enough to be scaned. When you scan the code with a phone, the detail of patient name, address, status will show up. It is a good help for doctor and patient to know the treatment. All the medical bracelets should made from 100% silicone. If the bracelet is embeded with a chip, it will note down the information of exercise, heart beat and sleeping. Then trafer it to the phone app. It contribute to health care. It is for special needs like Alzheimer, Dementia etc. Order over than 100 get 100pcs wristbands free & 10pcs keychains free. Order lesilicone bracelets wholesaless than 100 get 50pcs wristbands free & 5 pcs keychains free. Welcome to place an order here.