Hand out the Yellow Tyvek Wristbands at special events and occasions. These wristbands are neon yellow, so when your guests put them on you won't lose them and will be able to tell if they are part of your event or not. Some different events and places you can use them at are bars, birthday parties, as a drinking age I.D., fairs and festivals, school trips and sporting events. This pack of Yellow Tyvek Wristbands contains one hundred wristbands, each with their own number. To put them on, all you have to do is peel off the adhesive liner on the back of the wristband, wrap the band around the person's wrist and stick it together. These are single use, but are waterproof so they will work well at water parks. We offer many other colors, if you want to color code or supply a different color every day; take a look in our wristband section.