Could a size 11 woman fit a man ?

I bought size 11W which is size 9 men for my brother and it is NOT size 9. It was HUGE.

I normally wear 7- 7.5 but i have an old pair of lined crocs that are size 6 & fit me perfectly...do these run big also? Do all crocs run big?

I have recently bought the classic and the classic lined and bought 1/2 larger and they fit fine. If they would have sold 1/2 sizes that would have worked too. I just would not buy the womens smaller size.

Should I buy a size up? I am a women's 9 in the classic clog without the fur lining, and I don't know whether to buy a ten or not

I didn't size up, & even with a pair of thick socks, they fit. Very snugly w/ the thick sox, but they fit. But size 7 women's in the classic clogs fit a little wide on me with thick socks, so take that into consideration. Hope this helps!