Have enjoyed my Yukon crocs as have worn them every day since I got them a week ago.  They look great and the bumps on the sole feel great.  I wear a 9-1/2 D or E in a shoe, but ordered a 9 medium and they fit loosely as they are a roomy shoe.  The strap allows one to adjust the shoe tighter, however, I usually wear the shoe as a slip-on with no issues.

The first day went shopping in my new Yukons and the insole part that holds on the strap was rubbing my foot slightly.  Have a callus on my foot where it rubbed and there is no issue now.