Sportswear giant Reebok is set to launch foldable trainers in the UK after spending £2 million researching and developing the idea, it was reported on Thursday.

The "Travel Trainer" has been designed using advanced fabric technology that allows them to be rolled into a tiny ball and then packed away into a pouch or bag.

The Daily Express said the trainers were originally developed in Japan for vending machines but will go on limited sale in the UK priced at £45 in the next few weeks.

A Reebok spokesman told the paper: "We are confident these shoes will revolutionise the trainer market.

"These days people are travelling more, whether it's round the country or on more exotic trips, and these shoes fold down to the size of a rolled-up sock."