I bought one of these a while back to corral my house keys and it really worked out well - two bulky rings of became one flat thing that's really unobtrusive in my pocked. 5 stars for that.

So I bought another one for my motorhome keys but that didn't go so well. There are some very long keys for the doors, and some very small keys for other things, neither of which worked well in the KeySmart - the extreme sizes where just hard to get in and out. it's now holding the spare set which is again contained to a small size, but old fashioned rings work better for very large and very small keys. Minus one star for lack of adaptability.