I based my size request on crocs I have now.  They are the same style, except my old ones have holes and I wanted a pair that are enclosed.  Mine say 4/6 on the bottom so that's what I ordered. Definitely a smaller shoe.  Narrower and shorter.  I'm just hoping they will be ok without putting sores on my feet.  I will only be able to wear them barefoot.  Too small for socks.  I was disappointed in the size for sure.  Are they being made smaller to save material and cost??  My old ones I would give a five star, but because of size the new ones get a 2.