I bought this shoe from Amazon.com after seeing it at a Whole Body store (Whole Foods' clothing section).  They are like large bedroom slippers -- comfy, soft, and light on your feet.  Also, they have great cushioning so far.  The recycled tire sole is cool and gives good grip.

I agree with all the other reviewers -- order 1 to 1.5 sizes above your regular shoe size.  I typically wear an 11.  I ordered a 12 and it was just right for me.

The shoes are not waterproofed.  I used some shoe waterproofing spray and did it myself.  It's probably worth doing because if you go out in the rain, your foot will be saturated since this shoe will just absorb that water.  I haven't tested my self-waterproofed shoes in real conditions.  So, I just hope it works!

Right now, my view is that I'd buy them again at around $40 or below.  I might be more reluctant if they were like $75 +.