If you want to find out more about a particular wristband or you want to get hold of one, use the web details below to find out about the availability of the different types of wristbands.
Please note that Newsround is not able to supply any of the wristbands featured in this guide.
To get to these websites just paste the links below into your address bar
Blue Beat Bullying wristbands were available from the One Life section on the Radio One website. The site now says: "We're sorry but there are no more wristbands available and we currently don't have plans to produce any more."
The yellow, Live Strong, band is available from the Lance Armstrong Foundation website.
The white, Make Poverty History, band is available from lots of different charity shops and the Make Poverty History website.
Details of where to get the black and white anti-racism bands are available from the Stand Up Speak Up website.
The pink band is available from the Breast Cancer Care charity.
You can get red bands from British Heart Foundation shops. There are more details about their shops on their website.