This is my 8th pair and I've bought my first pair in 2008 to wear on a vacation.  They are amazingly comfortable and great for walking distances.  They are also very durable (I wore that first pair on the lava fields in Hawaii, and my daughter took another pair of mine to wear in Madrid, Spain.), but the mush soles do compress over time.  They have also become my back-up shoes for travel -- I always make sure I have a pair in my suitcase.