First off, I have heard lots about the difference between the older and newer versions of these, and I'm not entirely sure which version I have. What I do know is that these are the most comfortable sandals I own if it's not too warm out. They get pretty hot on your feet if it's above probably 90 degrees. I don't know what it is about them that makes them so comfortable, but I've been wearing these even if they don't match they feel so good. Be sure to order a size bigger than normal though. I always get size 12 Sanuk's and needed 13s in these. I love them.