A wristband includes the singer/band's name, the venue and the timing.
Wristbands usually come in the following colors:
Black: VIP Backstage
Gold : VIP
Silver: Front standing
Red/Yellow: Center standing (or back seating)
Wearing wristbands long after the concerts are often trends now for teenagers. A kid can show of his/her wristband to let others know that he/she went for this concert...blah blah blah
"No, they're still at the wristband exchange."
"I didn't see you at the Metro Station concert, Katie."
Katie holds up her arm and shows off her wristband.
"I was there all right....I got backstage!"