I bought a pair of these last June and I've worn them almost everyday since. Feel great during the hot summer months because they breathe very well and they're naturally anti-bacterial so mine have yet to create any odor. They smell almost the same as when I bought them. Over time though the heel starts to stretch out some but if you do a quick wash and let them dry, it returns to normal. These are the comfiest shoes I've ever worn and I know the minute these break down finally, I'll already have another pair ordered and on its way to my house.