Wristbands are encircling strips worn on the wrist or lower forearm. The term may refer to a bracelet-like band, similar to that of a wristwatch, to the cuff or other part of a sleeve that covers the wrist, or decorative or functional bands worn on the wrist for many different reasons. Wristbands are often worn and used similarly to event passes such as lanyards to information or allow people entry to events. These wristbands are made from loops of plastic that are placed around the wrist and are used for identification purposes (demonstrating the wearer's authorization to be at a venue, for example). Another type of wristband is the sweatband; usually made of a towel-like terrycloth material. These are usually used to wipe sweat from the forehead during sport but have been known to be used as a badge or fashion statement. A practice common in mid-1980s punk subculture was to cut the top off of a sock and fashion the elastic into this type of wristband. Silicone wristbands In the early-to-mid-2000s (decade), bracelets often made of silicone became popular. They are worn to demonstrate the wearer's support of a cause or charitable organization, similar to awareness ribbons. Such wristbands are sometimes called awareness bracelets to distinguish them from other types of wristbands. In early 2007 they became an increasingly popular item being sold as merchandise at concerts & sporting events worldwide. The wristbands bearing official logos or trademarks enabled the seller to offer a low price point merchandise option to fans. Silicone wristbands may also be called gel wristbands, jelly wristbands, rubber wristbands and fundraising wristbands. All of these wristbands are made from the same silicone material. UV ultra violet wristbands UV Ultra Violet Sensitive silicone wristbands appear clear/white when out of UV light, but when exposed to ultra violet light such as sunlight the wristbands' color changes to blue or fuchsia. These bands can be used as reminders for people to apply sunscreen or stay in the shade on hot summer days. Hospital wristbands Hospital wristbands are a commonly used safety device for identifying patients undergoing medical care (see patient safety and medical identification tag). Available in a variety of sizes to accommodate patients as small as newborns and as large as obese adults, hospital wristbands can be handwritten, embossed, laser-printed or thermal-imaged with names, pictures, medical record numbers, barcodes and other personal identifiers. Laser printing and thermal