I ordered these on a whim, I was going to get the "rasta" looking one with the rainbow strap but went with red and blue instead, wife told me I always get black slippers, why not add color to my wardrobe.  Whatever.  So they come in, I expected them to be slightly big, I wear a Crocs Athens M6, a Boat Line Beach Shoe M7, and a Crocs beach clog medium (M6-M7).  Long story short, they just BARELY FIT, they run pretty small, they're about the size of the Athens M5 from toe to heel, so they fit a M6 in other words.

They fit me just perfect, but they're SUPPOSED to be M7!

Just advice, get a size up if you're half size, I don't see how this would actually fit a men's 7, your heel would be hitting the ground or something.

I don't know why Crocs suddenly changed their sizing, probably to correct their "floppy" oversized image and reflect real sizes, what a time to do that though!  Thankfully it fits, so I'm happy with that part.

Update: after wearing them for about 2 weeks straight, I can say these don't have nearly the flexibility and "softness" and cushiony soles like I'm used to in the Athens and beach clog.  For example, walking on concrete, you can FEEL the heel of your foot hitting the ground hard, and if you step on small rocks on concrete or on gravel, you can feel those rocks poking through.  The sole seems durable enough, haven't had anything poke thru but I haven't tried walking on kiawe thorns though.

The footbed is adequate, has enough cushion, and like the Crocs ad says, it is pretty soft, being from recycled products, which is a nice surprise (usually recycled plastic shoes are tough or unforgiving), so for the footbed being soft makes up for the sole being kind of thin, but the hard "clap clap" when the slipper (flip flop) smacks the ground is a little annoying and takes some getting used to so that it doesn't make that sound.

All in all not bad, actually pretty good, I'd say 4.5 stars but not quite 5.  Just mind the size, it does run SMALL!!