The foot bed surfaces are a synthetic material that not only feels crummy when my feet sweat but also collect dust like crazy and it?s impossible to clean the marks off. He absolutely loves it! Read ur reviews. Light weight, not much arch support if you need it. 5cm height) AND they don?t look bad at all compare other crocs lol. I was really excited to buy a rack for my weights and when we went to put it together the screws and nuts don?t fit together. The rack arrived missing the some of the required nuts/bolts to assemble. Once it?s all together it?s pretty solid. It is simply a well made product that is just as good as it sounds in the product description. I wore those out and hadnt worn this style since.