I bought these to replace an existing pair of Dr. Martens that were a size 8 M US.  They came quickly and looked good but were a whole size smaller based on the fit and comparing the soles.  I compared them to 2 pairs of doc's I had and they were significantly smaller.  Thankfully, Amazon's return policy is incredibly easy. I printed out the pre-made return label, dropped it off at a nearby Staples store and got my new shoes quicker than the original pair.  I am very happy with the new pair.

They slide on really easily by grabbing the big pull tab and are very comfortable.