I am one of those kind of persons that always need to keep a tidy study. Hence i need to have all needles - and I have quite a few of them - all tidy and in place. When I did find this tool, I finally had a workable system. A year ago I did buy this bag - or whatever it is called - at a show in London. It holds everything. My KnitPick's interchangeables in the middle and needles, etc in separate folders. For Norwegian readers - jeg tror de har noe lignende på Striestuen.