They run small - because of the waterproof gore-tex lining - so I go up 1/2 size ... and have no problem.<br />I have a wide foot - I was wearing a size 9 1/2 4E in New Balance shoes - but since I have switched to Asics I went up a full size to a 10 1/2 in order to have enough width and I go up another 1/2 size when I buy the gore-tex lining.  They do not rub my heel - and are only slightly longer in the toe area.  I love them !!<br />First of all Asics are wonderful - I walk 5 miles a day/5 days a week.  Next - G-TX is wonderful !!!  .... I work in delivery during summer rain - and winter snow ..... these shoes keep you feet warm in the winter and DRY .... and they are not too hot for summer either.  The only reason I haven't purchased them to wear year round was the price .... .but my other Asics have greatly increased in price, making these about the same price - so I may start buying the G-TX year round. .... they are just harder to find to purchase.<br />They have changed the style since 2014 and this style was a little stiffer - took a little time at home to break them in.  First pair of Asics ever that I had to have break-in time.