>>12183569They look similar to the Tenga Eggs series
they are pretty underwhelming, it's like ramming your dick against a silicone wall, the tip never gets enough stimulation because there is literally nothing moving around it, meanwhile the sides of the glans get all the action and the shaft is left alone
You COULD go ham on it and make it reach the bottom of your shaft but you will rip it, and honestly it doesn't feel any better than doing the normal use
Which is also inferior to your bare hand
If I were to rank it on a scale from 0 to 10, with zero being you air humping and 10 instant climax, I would say they are a 5, with your hand being around 7 to 9 (if you know what you are doing)