Control Access with Tough Tyvek Wristbands. Green Tyvek Security Wristbands are the perfect solution for visually identifying authorized visitors during any event. Wristbands can be used for a variety of uses such as: age ID, crowd admission control, special access, festivals, event promotions, raffles, and ticketing. 500 wrist bands per package. Each wrist band is approximately 10 x 3/4. Made of Tyvek, which is tear, stretch, and water proof. Tyvek protects the wristbands from being transferred. Maximum strength adhesive prevents reusability. Each wrist band is sequentially numbered and stamped with our company information, allowing you to spot counterfeit wristbands. Make sure your upcoming event is safe and secure with Tyvek wristbands!