This SevenTeen evolution version has finnaly released from Toysheart. SevenTeen Evo has a new combination of 2 different materials. Toysheart's "Fin Cross" material was picked as the new material for the Seven Teen Evo. This not only adds to the feeling of the onahole but increases its durability from its previous version. The amount of material has also been upgraded making it bigger than the original. The outer layer is made of non sticky material and the inner layer is made of extra slick material. The tunnel has more exaggerated bends and better uterus design. The only thing softer than the supple outside of the Seven teen Evo is its yielding interior. The entryway quickly tightens into a ribbed love tunnel, opening into a larger multi-textured chamber at the end. With a double-layer construction, dense, hypoallergenic silicone, and vacuum action that grips you like the real thing, this is truly an onahole evolved.