Security Wrist Band is a single-use, waterproof wristband made from DuPont Tyvek. The wristbands are 10" long. Each one is perforated and has a one-time use, peel-off adhesive liner. The Wristpass is a superior means of admission control. These bands are perfect for club admission, conventions, parties, bars, crowd control, birthday parties, legal drinking age, festivals, safety and security and school trips. Each tag is sequentially numbered. This item is made from materials that are safer for children..