100 Blue Tyvek Security Wristbands 100 wristbands Each wristband is approximately 10&Prime; x 3/4 &Prime; Made of Tyvek, which is tear, stretch, and water proof. Tyvek protects the wristbands from being transferred Maximum strength adhesive prevents reusability Each wristband is sequentially numbered and stamped with our company information, allowing you to spot counterfeits