A school in Durham has banned pupils from wearing rubber bands - including anti-bullying wristbands - to lessons.
Head teacher Pat Henson told children at an assembly last week they should leave the bands at home because pupils were wearing too many bands at once.
Mrs Henson said she was concerned the bands could catch on something, like a door handle, and could cause an injury.
The blue rubber bands were given out by a Radio 1 campaign to beat bullying and have been a huge hit.
Celebrities such as footie stars Frank Lampard and David Beckham have been spotted wearing the bands.
Several coloured bands
Other campaigns also use coloured bands, including pink and yellow bands to raise awareness of the illness cancer, and white bands to make a stand against poverty.
"Wearing one band is a making a statement, but wearing a number of them is turning them into a fashion item," said Mrs Henson.
'Whole school activities'
On Monday Mrs Henson held a meeting with teachers to discuss how the whole school can be involved in supporting anti-bullying.
One idea put forward was a non-uniform day where everyone could wear an anti-bullying wristband as a one off.
"The school fully supports measures to combat bullying and actively encourages children to discuss and take part in anti-bullying activities.
"We prefer to involve the whole school in activities," added Mrs Henson.