I didn't actually wear the pair I was shipped (returned for a smaller size), but I know the product and I have occasionally  enjoyed wearing the pair my sister purchased 2 years ago.

That said...

I wear a size 8.5 shoe.  I ordered the Crocs in a size 8. Waaaaaay too big. Like 2-3 sizes too big.  Went back and looked at my sister's Crocs.  Hers are L4/M6  Returning my original purchase for a Croc size 6 - (which are, honestly, slightly small, but which I hope will accomodate over time)size 7 are not available .

Bummer - the Navy Blue are available in the size in need.