I purchased these socks 3 or 4 months ago and so far have been pleased. I guess the true test is that given a choice I reach for these socks rather than other socks in my drawer. I purchased the Large size which the charts say equate to a shoe size 10-13. My shoe size is 10.5 (us) and I have 4E wide feet. These socks are not snug on my ankles/calfs (which is the idea with diabetic socks) and do tend to slip a little bit, but it is not much of a problem and they are very comfortable. The only negative comment is that I ordered the Navy Blue color. At first this was a nice rich, dark blue. However, with a couple of months of washing, they have faded some. Not awful, but noticeable.  -  I will probably buy some more of these because they are easy to get on by big, wide feet, they fit and are comfortable.  (I am giving 4 stars rather than five because of the fading issue.)