I received an ebay purchase the same as this one a couple of days ago. I think this sort of thing is quite popular in Northern Europe for walking around town on icy paths, etc. I'm not sure how long they'll last bushwalking on rough rocky tracks, but at less than $18 delivered, I thought it would be worth trying out.
I'll be taking them on a walk in a couple of weeks and will write up a review if I get to use them.
Has anyone else tried things like this for walking on icy bush tracks?
I've seen others that are more like chains with spikes, and would probably be much tougher, but they're also somewhat more expensive.