Arrived just in time for 4 inches of snow that was sleeted and then rained on by 1/2" of rain turning it into crunchy ice.  I take a 12.5 extra wide for a perfect fit and of course no one makes a 12.5 hardly so I tried the 13 M.  Fits perfect.  I love these I just slide right into them and with the warm liner even with temperatures in the teens and windy if it is a short excursion I am OK even if I don't bother to put socks on!!  For anything beyond going out to the woodshed or up for the mail a regular pair of socks keeps me comfy down well into the teens.  These are much lighter than the clunky rubber boots I had as a teenager.  For extended walks in the snow I probably could use a bit more arch support and there is just enough room for a pair of support inserts if they are the thinner ones.  In short, I LOVE THESE BOOTS and not a bad price either.