Usually I wear a 9W,and these in a 9W run small,I really like this style of Bass sandal,Bass used to make them for men under the Bass Walking Systems name,and they are no longer available,wich is a shame because these are the only sandal of this style I can wear without developing problems with my feet.

Other flip flop sandals shift around and are difficult to walk in after some time,but not this Bass sandal.