These are the HOTTEST sandals temperature wise I have ever owned. Your feet are basically encased in neoprene. I cannot understand how people keep buying this brand. I made the mistake of bringing these as my only pair of shoes on a recent road trip.  I kept having to take the shoes off and stand on TOP of them to cool off. They are tolerable on a day that the temps are in the 70's, but in the 80's and 90's they are torture. I had teva's for years and never thad this problem. The neoprene is also tight- I had to actually cut the sides of the straps once my feet swelled in the heat. They were much more comfortable after this, and i was able to wear them on a five mile hike. I never got a blister and the tract was good, but my arches ached due to lack of support after long days of walking, the first time I ever had this problem. They are not inexpensive. what is the point of buying leather shoes if they cannot stretch or breathe? biggest shoe-buying mistake I ever made. I will not be returning to this brand.