Like most Crocs, clogs, slides and similar shoes, the Fresh Foam X RCVRY only comes in whole sizes (9, 10, 11, but not half sizes 9.5, 10.5, etc). That being said, each size does have a little bit of wiggle room due to the shape and form of the shoe, so the whole sizes do accommodate half-size feet.
For those of you whose true shoe sizes are whole sizes (size 9, 10, 11, etc), I recommend going true to size. (ie. I am a true size 9, so I buy my Fresh Foam X RCVRYs in a size 9).
For those of you whose true shoe sizes are half sizes (size 9.5, 10.5, 11.5, etc), I recommend going down half a size to your whole size equivalent. (ie. I am a true size 9.5, so I buy my Fresh Foam X RCVRYs in a size 9).
Softness: 9/10
Firmness: 3/10
Midsole Shape: 5/10
The Fresh Foam X RCVRY features a full-length, thick, and removable Fresh Foam X insole. This provides you with a lot of cushioning and softness. Like the name of the shoe entails, this is meant to massage and cushion your feet for recovery purposes after a long workout or marathon. The midsole shape is relatively flat and lacks arch support, but this is on par with most other clogs and slides.
In my opinion, I think these are miles ahead of standard clogs and slides in terms of comfort.