Can anyone help me and my pogo problem?

There are these shoes you can get which have springs on them. i wana buy some but dont have a clue what they are. anyone who knows about it, can they tel me about them.

i think they are called hoppers but thats about all i know. they have metal feet at the bottom and a big bit of plastic which bends when you walk, so when you jump it compresses down then propells you back up. there really cool.

Try google cos i aint got a clue what your on about.

its ok. i did sum searching and i found them. thanks for the help