I bought these flip flops from Teva a few years back and had to buy a new pair when my new puppy got his little puppy teeth into them!  On a good note, they did last for three years and would have lasted many more if it were not for the pup.  However, the newer version has a LOT of arch support, much more than than my old version.  As I have low arches, it means I can't wear them more long periods of time or I feel aches in my knees and low back.  And I'm only 27 and quite fit!  Be warned:  if you have low arches, wear them all day in the house before you settle on keeping them.  If you have high arches?  Well, you'll probably love them.  Great cushion, well made, does not cause blisters, but NOT GOOD for those with low arches.