Tried several Altras on at the shoe store, the 7's were bit too big, the 6's too small.  They ordered me a 6.5 and after three weeks' wait with no idea when shoes would arrive, I ordered these via Amazon.

I should have ordered a 7.  Unfortunately, I didn't realize my mistake until I started doing some serious walking in them.  My toes hit the seam where the insole meets the toe box.  I'm still not sure a 7 would work.  That said:

PROS:
This shoe is wildly comfortable.  The insole is very cushy, and the zero drop is amazing.  There is plenty of room for you to spread your toes out and let them do their job.

The tongue area is quite lengthy with leads to an ability to really snug these up to wrap your foot comfortably and securely.

CONS:
Don't even try them on with the factory lacing style.  I had to completely unlace them and them lace them up again in able to get a decent-sized bow that wouldn't come loose mid walk.

The toe box is shallow where it meets the insole, so bear that in mind when you are thinking of sizes.

Sole is very soft, which make for a very comfortable foot fall but I have to wonder how well this sole will hold out.