The interior of Puni Virgin 1000 is based on a realistic structure ungraded with more stimulating textures. As you first enter the hole, parallel rows of nubs gradually tightens as you enter the middle section of the tunnel. The next section curves up and down with more organic looking ribs and nub textures. The end of the tunnel is the cervix structure that also double as a head stimulator and vacuum chamber. The Puni Virgin 1000. Called "1000" due to the sleeve being made from G Project's 1000g (2.2 lbs) of soft("puni") and realistic feeling material called Momochi.