I am really happy with these.  I will say that the first couple times you use them, you may need to adjust them.  I made them a little too tight, which is just like tying your shoes too tightly--my feet started to hurt.  But it was incredibly easy to adjust them.  I now have them at a perfect length so I can slip on my shoes and go without needing adjusting.  This is particularly helpful when there's a dog who needs to go out RIGHT NOW.