Despite their flaws (mostly caused by stopping too soon, leaving sides and back too short) these turn out to be quite useful. Shoes come in half sizes, slippers not so much. So a 91/2 shoe goes to either a 9 (tight and uncomfortable) or a 10 (loose and sloppy, requiring shuffling) slipper. But putting these slipper (liner)s on makes for a perfect fit.
+ Crochet Geek