An unofficial tribute to the Japanese light novel and anime series "Oreimo" ( My Little Sister Can't Be This Cute), the Oreimo My Little Sister Can't Be This Young Onahole by Tama Toys has a tight pair of lips that will hold you fast in their grip.
Her tunnel itself is a nest of bumps with two tightening zigzag vices as you proceed further into her body. First you are squeezed into a middle chamber of bumps and then soon reach a series of three zigzags, before ending in a sealed pod that you can push and push against till you explore.
The Oreimo My Little Sister Can't Be This Young Onahole features: