Very thick sole which makes this Croc very heavy duty. It will last for years with regular use. I wear Crocs around the house, but this is not a model for lounging. I wear the Baya for my house lounging shoes, which are much less bulky. I am upset that the unlined Baya has been discontinued, however. The Duo Sport Clog fits a bit large and runs probably a half size larger so if you wear a 10.5 size shoe get the 10 in this model. Do not purchase this Croc model if you have narrow feet, because it is extremely wide. I have wide feet and it's still a bit wide for me.