Good fit out of the box, good to work without break-in.  First time I have used these soles and they give a heavily cushioned feel that really makes working on concrete more pleasant.  I have had some problems over the years with new boots breaking in on my Achilles tendon, but these are no problem.  Size seems true to length, definitely a medium  M, not a wide M.  Certainly waterproof after hours of power washing.