I've worn these insoles for about two weeks now (in a pair of soft leather loafers from Robert Zur), and they provide great heel support. The problem is that the insoles are rather stiff and a little thin towards the toes. They don't quite fit the shape of my shoes (even though the length is right), so when I walk, I can sometimes &#34;slip&#34; off the outside edge of the insoles as I shift my weight to my toes, causing me to buckle at my ankle from time to time.  They're really great in terms of support/softness, but I need something a little wider -- next time, I might try buying a wider size and trimming it down. If you don't have wide feet or you don't pronate, this should not be an issue.