I like these a lot more than the regular clogs. They do run a little small and I had to run out and get my 3 year old another pair within a few months BUT I did notice that in water, he didn't slip like he would with the regular bottoms. These have grips in the bottom that grab when they climb and bend their foot during activities. It can be a little tricky when buying Crocs. I told my dad to buy these in a size C8/9 and then noticed that within a month or two, my son was getting a blister on both feet on the sides. We were stuck with the size we got or going to the next size which would have fallen off of him. I went out and bought the Lego style instead and they fit fine. Then I thought I lost them somewhere in the house and couldn't leave without shoes. Ended up going out to buy the cammo look in another size and those either run normal or large. I can't really tell what size is normal anymore. They are loose looking but they don't fall off of him. They will probably last him a lot longer than the Lego ones based on size. If my store had the Duet Sport then I'd go back to those simply for the grips on the bottom. Still, the cammo style works perfectly.