Edit:  I am knocking these down from 5 to 2 stars.  In less than 4 months, these slippers are falling apart.  The top of one has almost totally separated from the sole.  There are holes at the top where my big toe is poking out.  The are definitely comfortable, but I was hoping that for the price, these would last closer to a year.

Original review: Great slippers!  I was spending something like $60/year on cheap Walmart slippers.  I work from home and do not allow shoes in my house, so slippers are a constant companion.  The speedy breakdown of the $12 memory foam slippers I was getting at Walmart was maddening.  Buying slippers every 2-3 months was for the birds.  I saw these in a shoe store in a different style.  Decided on these cute sheep slippers.  I love how they are warm, but not too much so.  They are sturdy and durable, and there is even a little arch supports.  The foot bed is as firm as I would want it to be.  Very well constructed.

If this helps, I ordered a 42 (11), and they were perfect for me.  I measure a 10 1/2 wide, but typically buy size 11 shoes.  Size 11W are too wide for me, but 10W are usually just a hair too short.  (I have never seen a 10.5W shoe.) These slippers are the perfect length for me. My guess is that they'd be perfect for someone who measures an 11 or 11W.