One Direction have launched a range of stationery in support of a US anti-bullying campaign.

The chart-topping boyband have teamed up with Office Depot to release various products including stickers, pens and notebooks in order to raise money for an American educational schools programme designed to tackle the problem of bullying.

In a statement, Niall Horan said: "We're really excited to partner with Office Depot and help spread the anti-bullying message with our fans and students in schools across America.

"And you know we're not long out of school ourselves so we can relate. It's a problem that's fresh in our minds and we're eager to raise awareness on this subject. We hope the [video] will help raise awareness, especially since it will be played at our concerts across America."

The quintet, who last week unveiled their own fragrance, Our Moment, have also put their name to a set of five nail polishes as part of the 1D + OD Together Against Bullying campaign.