Although they are attractive and comfortable (but run wide) I am very disappointed by the knitted cuff which pills like crazy.  I've owned them about 9 months, but only wore them last winter.  Every day they continued to pill...so much so that on both slippers the fabric has come detached from the slipper.  I contacted the company and asked if I could exchange them for something that would hold up better.  They were completely unhelpful and basically told me tough luck!