SIP ID bands personalize and label your drink. The 4 Pack includes 4 bright colors: Turquoise, Lime Green, Orange, Purple. SIP ID is simple to use: 1.) Write your name with a permanent marker on the white signature box. 2.) The ID bands has an adjustable closure to wrap around most size drinks: water bottle, cans, sports drink, a drinking glass, reusable bottles & cups, solo cup, beer, cocktails. 3.)Drink worry-free. Always know what drink is yours & finish what you open or pour. Use SIP ID bands anywhere: school, daycare, work, sports, camp, birthday, graduation, party, family reunion, gym, picnic, pool, and at home. They are helpful for any occasion where drinks can easily get mixed up!