This is my first pair of Crocs as I could never see myself in a pair of the traditional Crocs, no matter how comfortable they are.  I was told Crocs always runs big.  I normally wear size 7.5 or 8 and size 8 of this flat just fit me perfectly.  Size 7 was a bit snug for me on the toes even though they are stretchable.  They are fun to wear on weekends with short skirt or capri.  They do look plasticy so I'd not recommend them for any business casual attire.  They are very comfortable for walking.  I'm happy with this purchase.