I've worn through a dozen pairs of quality flip flops, mostly from Scott and Island Pro, along with plenty of the less expensive kind that falls apart after a few months.  The Island Pros are the best I've ever worn.  I've been wearing the pair on my feet right now almost every day for almost four years, and there's some wear left on them.  Amazing!  A solid, comfortable, quality product made to last--I wish I could recommend more items this enthusiastically.  But the price is now a lot higher than most of the competitors, and hard to justify for a rubber sandal.