Each Twins 4D Onacup features a unique split-tunnel design that effectively gives you double the experience for the price of one. Depending on which end you use, you can enjoy anal or vaginal sex with the same masturbator. The Blue 1 Soft Large Grain Comfortable features tight ridges that will drive you wild, the regular nubs stimulating your cock with each thrust. The Green 2 Zigzag Tight Stimulate has more natural, irregular tunnels, with bumps and protrusions that more closely simulate human anatomy. The Purple 3 Narrow Tight Stimulate is the tightest of the three, as if you are fucking a fresh teen who can barely take your cock. All sleeves can be removed from the cup for easy cleaning and use like a traditional masturbator.
The Twins 4D Onacup features:
