I bought these slippers to help with foot pain... after a few days my feet stopped hurting.  I am retired, so I wear them all day now!  I have washed them and they turn out just as soft and cozy.  I haven't put them in the dryer (like the tag said you can) I just let them air dry.  I just LOVE these slippers so much I bought another pair.  I wear 7 1/2 and the Medium fits great.  I ordered the large (8-9)the first time thinking they were slippers and I wanted them roomy.. but they were way too big for me.  I will be ordering more in the future!!

Just an update over 2 years later... Still love these slippers.  They fixed my arch problem and I wear them all the time at home, which is most of the time.  I just bought two more pairs, and have given them as gifts too.  My origional 2 pairs are still fantastic even after weekly washings.  So impressed with these Acorn slippers!!!