JohnJ wrote a review of Sierra Designs Down Moccasin Slipper - Women's on December 27, 2011
With one previous review questioning the sizing, I confirmed sizing with Customer Service to let them know my wife was a size 6.5 and they recommended the medium. This barely fit her and because the opening for the foot is so small, she had to tug them on with the loops in back of the slipper to get them on. One of them ripped out after only one day. These really should have been designed with some elastic or ties in the ankle area for greater ease of getting on.
It should be noted that when I called Backcountry for a return for this issue, they promptly took care of me to my satisfaction!