I purchased these to use as summer slippers.  Birkenstock is my shoe of choice and I have several pair.  The EVA ones are soft, very light and flexible and have a perfect amount of support.  I end up wearing them all day long inside or for trips to the mailbox.  I'm trying to find a reason to purchase more, but I'll wait until I see how this first pair takes the wear. I have only had them for about a week.