These were shoe heel saving devices made of metal that money conscious parents would buy to stop their children going straight though a new pair of trainers in a few weeks.
You put them in the heel of the shoe - they sounded like you were tap dancing when you walked.
I seem to remember being able to make them spark if you scraped them over the pavement fast enough. Simple art of amusement for us retro kids before the days of ipods and playstation!
Do You Remember Segs?
Do You Remember Segs?