The uppers are very flimsy. I own socks that are thicker an give me more support. The insoles and bottoms seem just like the 4 or 5 other pairs of Crocs shoes I have owned. I was expecting more from something with RX in the name. Rx is just another word for black I guess.

- After wearing these for a while I like them better. The insoles are definitely thicker than most crocs shoes. They provide a lot of cushion when walking or standing on concrete. The lack of support and lightweight uppers aren't bad now that I am used to them. The benefit is that the top and sides of my feet do not feel constricted at all.