I normally wear a 9 medium and ordered an 8. I'm glad I read the reviews and ordered a size down. But still the shoe is very wide, and this means that the back of my foot, from instep back, shifts from side to side since there's so much room and the strap doesn't hug (or even touch) the foot starting half-way back. Seems like it would fit a guy's foot better.  I kind of like the wideness in the toe, however, because my pinkie doesn't hang off the edge as it does in some other thongs.  The cushion in the heel seems like a big plus, but there's absolutely no arch support as there could easily have been in a molded shoe such as this one.  I like the light weight and the army green color--it will match a lot of outfits.

2013:  Don't know what I was objecting to--they seem perfect now, still going strong after almost 5 years!

2015: Ordered another pair of Crocs Athens, and they're a dream.  I did get fooled once and ordered another style, and was disappointed.  I am delighted to still find Athens, even if not always in the colors I'd prefer.  The men's 6-women's 8 fit my size 81/2-9 B foot perfectly.  Although there's not really an arch, these are my go-to shoes whenever my plantar fasciitis flares up.