Bought shoes after friend raved about them and I really wanted wool shoes. They are the lightest shoes I have ever owned and they keep my feet warm. I wear a size 8-8.5 and I had to return the first pair for a size nine. The return process was easy: print a mailing label, take it the post office and as soon as it is in the system they send the new pair of shoes. The size nine is snug heel to toe so these shoes run small. My main issue is I wear Superfeet orthotics and the heel upper is so short my foot slides out when walking - I feel like I will lose my shoe. I wear them but I won't buy another pair.