Lust Tunnel Blowjob - for the Autoblow A.I. The Lust Tunnel features an opening that mimics a kissing mouth and is made from a skin-like material that feels ultra-realistic, adapts to any penis size, and snugly envelops your best piece in comfort. This sleeve is a pleasurable addition to the Autoblow A.I. masturbator. The sleeve is made from soft silicone material and has been specifically designed for the Autoblow A.I. This interchangeable sleeve is lined with a ribbed texture on the inside. Together with the mouth opening, which is equipped with luscious lips, this combination simulates the perfect blowjob. Our recommendation: Before indulging in this mouth with its soft and full lips, apply as much lubricant as desired to the opening and the penis. It doesn't get much more realistic than this.