I have several pair of winter Croc's.  They're so comfortable that I often wear them in place of slippers inside the house.  When I wear them outside, I always wear socks with them.  (Otherwise my feet would be too cold!)  I wear a size 8 shoe and usually order a size 9 in the Winter Croc.  They eventually loosen up with wear.  But, I only wear them in the house & yard, so it doesn't bother me.  I just wish that Croc sold replacement liners because the liners wear thin long before the shoes give out.  (I'm not sure Croc's ever give out!)