I absolutely love these slippers! As others have noted they felt a bit stiff and slippery the first couple of days, but gradually softened up and provided better "traction". The lofty inside 100% lambswool conformed to my feet and  are now an ultimately snuggly pair that keep my feet toasty but never sweaty. I prefer the slip-on style over step-in slippers,and they stay well on my feet. I have washed other similar style slippers in the washer on cold water and Woolite with very good results, and will probably try the same with these after awhile... but wool has a nice ability to cleanse itself so I should be fine for awhile. Ordering a second pair for my mother and think she will love them too! Oh.. and at these prices..... how can you go wrong?