I bought these the same size I buy all my slippers, which is half a size larger than my foot. These are very good if I choose to bare foot it. The don't slip off, but I prefer to keep the inside as clean as possible, so I need to be able to wear socks with them. And my feet tend to swell, so I would highly suggest buying at least one FULL size over what you normally wear. Other than the fit, these are awesome. The look as though they will last the needed year ( unusual these days, sadly ), and they definitely keep my feet warm :)

http://www.amazon.com/gp/product/B000VHTCLA/ref=cm_cr_rev_prod_title