The new shoes that grow with children's feet... but will any kids actually wear them?

All too often, the little darlings are bursting out of their new ones before the soles have been scuffed.

But one inventor claims to have found the solution - shoes that grow with the feet.

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The INCHworm trainers use a technology called iFit to expand up to one full size.

They are altered by pressing a button on the side and pulling the toe out to the required length.

Each pair goes up in two half-size increments, which means that each offers three sizes.

According to the makers, the shoes are sturdy enough that they won't stretch accidentally and can withstand the roughest of playground workouts.

They are not cheap, at £47.99 including delivery.

However, the patented technology means that each pair would last about three to six months longer than a normal pair.

If they were taken up across the country this would save nine million pairs of shoes a year, it is claimed.

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No more growing pains: When the shoe becomes a tight fit it can be made bigger

Unsurprisingly, the invention by American Hank Miller was initially a little unpopular with major shoemakers in the U.S.

He said: "You can buy the shoe on the basis that it fits correctly, but as they grow, the shoe grows with them.

"That means the shoe will last longer. There are fewer trips to the store and less money spent overall."

The INCHworms were brought into Britain in February through Scottish distributors Fat Shoes Day and are available here in three styles to fit children aged three to ten. Spokesman Peter Craig said they have already sold 500 pairs.

He added: "They are also great for the thousands of kids who have one foot bigger than the other - they could have one shoe set at size 11 and one at 11 and a half."

Theresa Green, 32, bought a pair of INCHworms for her daughter, Phoebe, seven, and says they have saved her a fortune.

"Phoebe's feet are growing so quickly but rather than having to go shopping every time I was just able to make the shoe bigger," she said.