I was impressed with the high rating these slippers have earned by other Amazon buyers and found the praise irresistible  and purchased a pair for my own use on November 10, 2011.  Unfortunately, I cannot entirely agree with the 4 and 5 star ratings this product has received.

I wear a size 8.5 men's shoe and purchased these slippers in size 9 since half sizes are not available.

The first issue I had with the slippers is the removable insole. The insole and built-in arch supports provided are dense foam and never failed to remind me of that fact while walking.  They consistently felt misplaced and awkward.  I discarded the inserts after a few days and have since replaced them with an inexpensive generic quality insole which is, remarkably, much better suited to my foot and to my sensibility of what a slipper should feel like.

The  second issue is size. As I said, I ordered a half size larger. Over the first few days, the fit was quite comfortable.  However, this changed as the wool interiors lost their initial loft and I was left with a product that now felt too big.  This was corrected satisfactorily when I changed out the insoles (they are of a thicker foam than the originals) and is no longer an issue. I mention this only to clarify that in my case, I would have probably been better off had I ordered the slippers a half size smaller.

Materials appear standard grade. Sole is pliable and unremarkable.  Product manufactured in China.