Have worn Asics for years and previously had several pairs of the Cumulus 12. Those were no longer available so I bought the 16 instead. Noticed almost immediately that the seemed a tad small but just thought I might be imaging it. Worn multiple times and each time was somewhat uncomfortable as my toes seemed to be hitting the end a bit. Figured I must be imaging it until today... Went on line and found a review on Google apparently they run a half size too small!! Ugh and now the return window is closed and I've gone back to wearing my old Asics. Total waste of $90. Don't get why Ascis would make same model of shoe half size smaller. Very irritating and disappointing.