It is possible to deliver your WM doll with two different vagina types; build-in (or fixed) and replaceable.
There is no visual difference on the outside of the doll but it is mainly internal. With the ‘replaceable vagina’ the vagina is slightly wider and you get a sleeve that can be removed, so it is easier to clean her.
In the past the build-in, also called ‘fixed’ vaginas were more realistic then removeable vaginas. Today the fit of the sleeves is much improved and there is no difference in realism.
The replaceable vagina is easier to clean.