I live in Cocoa Beach Florida.  Hot, humid with lovely ocean breezes.  I usually have a terrible problem with sneakers of any sort because they make my feet hot and sweaty.  I don't know about you but if my feet are hot I'm hot and miserable.  These sneakers do not make my feet hot and sweaty at all. Hence, I can wear them for hours.  I purchased these in January so I have had them for a while.  They are holding up great and they still do not make my feet hot.  (It's mid-June so it's plenty hot here.)  BTW if you have a narrow foot.  I'd skip these shoes.  However, if you got a little wide or little fat foot you are going to love them. Forgot one important thing! They are also super light weight.