The item arrived quickly and fits pretty much every shoe I own. The obvious negative is that if your shoes are already snug, these probably won't work but that's not an issue of the insole. Any shoe that I own that's a bit loose and has a high back, these things work wonders. I stand about 5'7'' and really just stumbled upon these and thought, hey I'll try it. I easily stand 5'10'' using these and I have to say, it's weird and kind of boosts confidence just a bit. They definitely work as designed and I would recommend these to any guy mildly concerned about his height. They are surprisingly comfortable and look like they'll work for a long time.