The inner labia of a vagina that protrude well beyond the outer labia. So called because they are large and stretchy and flap in the wind like the silken sleeve of a wizard's garments. The presence of a wizard sleeve gives the vulva an appearance quite different than a coin slot
and usually means the vagina is not a peach
I went down on her, which was nice, but her freakin' wizard sleeve kept getting in the way!