"I have been a customer of this retailer for many years while visiting FL, and subsequently have continued to do so by mail order. I love (correction: lovED) the Kenkoh massage sandal, and this has (had) been my sole purchase from Happy Feet Plus. Each pair of the constantly $$$$$ escalating rubber sandal would last one - two years.... until my recent purchase in September. The right shoe frayed within 5 weeks of wear, looking like those ripe for replacement. Instead of replacing the shoe, the retailer has been challenging me on the veracity of my claim. So, this will be the last purchase of Kenkohs....and from Happy Feet Plus. They have lost me as a customer permanently. Keep your $$$$$ folks. There must be a good alternative around."