resistant , high temperature resistance, no deformation and no side effects on body. Silicone bracelet has certain care function while some functional materials such as negative ions added into the bracelets A glow in dark silicone wristband is made by the same technology with the 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 wristband. 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 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 siliconpersonalized bracelets for mene 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. less than 100pcs , get 50pcs free , order more than 100pcs , get 100pcs free. The free are of same design as ones you order. Large amount, more favorable price. We make all the designs for free. Our designer is skilled to make you logo and message into the digital proof. All we do for designing is free no matter you place the order or not. Due to the prompt service of FedEx, UPS and DHL, we are able to make a 2 days order. Super rush order of 1 days production and 1 days shipping is available. It helps you achieve your promotional event. Regarding customer service, we will inform you the tracking number once it is ready. And we provide the best suggestion if order get stuck on the way. We are always on line for your order and inquiry, 24 hours a day, 365 days a year. You could contact us via live chat, hot line and email. If you place an order, you can pay it by PayPal, credit card or debit card. make-your-own-silicone-wristbands-ukdesign-your-own-silicone-wristband-online on. 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. We you scan the code with a phone, the detail of patient name, disease, taboo drugs, status will show up. It is a good help for doctor and patient to know the treatment. It will be good help for hospital to manage patients. All the medical bracelets should made from 100% silicone which is harmless and eco friendly to avoid secondary injury to patients. If the medical id bracelet is embeded with a chip, it will note down the information of expersonalized bracelets for menercise, heart beat and sleeping. Then trafer it to the phone app. It contribute to health care. Order less than 100pcs, get 50pcs free and 5pcs keychains free. Order 100pcs or more, get 100pcs free and 10pcs keychains free. All the free wristbands and keychains are same design of the one you order.