Effortlessly identify your drinking age verified guests with this easy to notice full color Drinking Age Verified (DAV) Beer Full Color Pattern. Available in 7 different colors this 3/4" Tyvek® Wristband is an excellent way to help protect yourself from under age drinking at your next all age event. Want to add additional security? Try switching up the colors each night of the week to prevent counterfeit wristbands or by adding a UV image which can only be detected by black light.