CrocsClassic Lined Clog unisex-adult Clog

Could a size 11 woman fit a man ?

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?

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 wear a size 4 in kids what size should I get ?