I have very problematic feet and even a little rubbing can be serious- so this is a GREAT product for those shoes that almost fit- but just bother me in one tiny area. The plugs are just what is needed. If a shoe isn't roomy enough I can't wear it at all, but a little extra "ease" is not a bad thing. To the best of my knowledge shoes can't really effectively be stretched lengthwise so I really find this is all I need.