This product turned out to be heavy, very stiff and uncomfortable to wear, with or without socks.  Nothing like its picture or blurb.

I found that, with socks on, I have to fight to get my feet fully into the slipper, pretty much defeating the purpose of a slip-on.  (and 11 1/2 is a half-size larger than my regular shoes).

Have stopped trying to use these clunkers.