I ordered some similar sandals like these in a size 6.  I am a woman, but like to wear these type sandals to play golf in.  They are cheaper than golf sandals, and to me, work just as well.  It's hard to find this type in a woman's sandal.  Not knowing exactly what size I should order since I wear an 8 in women's shoes, I ordered a 6 in the mens.  The 6s were a little small, so I returned those...I was impressed on how easy it was to return these thru Amazon....another reason I love Amazon.  I reordered in size 7, and they are just right.  They are also made well, should hold up for quite a while.