Guest expiration wristbands are fun and good-looking. Made of a revolutionary tear and stretch-resistant material called Tyvek, they are virtually tamper-proof. They are automatically activated when attached on the guest's wrist, and then the expiring area changes color within about 15 hours. These 1" x 10" wristbands come in VIP, Legal Age, and One Day Pass styles. Keep a watchful eye on your guests with these automatic expiration security wristbands.