They are the latest craze to sweep the playground and a must-have toy (let's say accessory for the grown ups).
Ask anyone with children and they'll likely confirm Britain has gone loom band crazy and it's all since the Duchess of Cambridge was seen wearing one during the royal tour.
In fact sales of loom bands have rocketed by more than 300 per cent and they're now as much a fashion statement as they are a children's fad.
Everyone's talking about them. Last weekend celebrity chef Simon Rimmer told how his teenage son Hamish is a big fan on his show Sunday Brunch and scroll through Facebook and Twitter and you'll find it's a subject that has everyone chatting.
The simple, colourful, rubber bands, are weaved together to make friendship bracelets and have been seen on the arm of celebrities including presenter Fearne Cotton, David Beckham, One Direction's Harry Styles and pop star Miley Cyrus.