Heelies.

[Samantha]

Got Heelies few year ago, never wore them, they will probably still fit. They cost 4 pound.

How do you get the wheel out?

[Ed.]

Pick up one of your shoes, turn it over, and point the heel away from you. Get a good hold of the upside down shoe with one hand; place the thumb of the other hand on the corner of the wheel. Push with your thumb, away from you and up, loosening the wheel and causing it to pop out away from you.

[Sharon]

Are they official ones or lookalikes? They used to be £40 when I last looked