they fit great. they feel great. i'm so happy with these boots. lets see if they last a year or more. very happy with this purchase. they feel so good walking around in them outside. they seem to be a good quality rain boot to me. the price was good also. i wear size 10 shoes. i bought size 11 boots and they fit perfectly. i wear boots alot and i really feel good walking around in these. i spend alot of time outside too. i hope this helps anyone on the size. i put at least 8 hours a day of ware on these boots.

update nov 23 2011:  i had to go up to size 12 because my left foot swells up so much. size 12 feels wonderful. what a relief. i am still very happy with the boots.