I regret ordering these larger than usual.  I wear an 8 in street shoes and 8.5 in running shoes.  I bought these in a 9 based on reviews.  I should have stuck with the 8.5.  Even though they are low, they are deep enough to fit my arch supports.  I couldn't get the laces totally comfortable for my wide feet.  The laces also have a rough texture which I guess contributed to the blister I got on top of my foot running 4 miles this morning.  I'm going to try replacing the laces and see if that improves anything.  They are very lightweight and look nice.