Special feature: Very strong vacuum
1,50 ★ turn inside out
0,25 ★ no vacuum after first use, but can be used multiple times
1,50 ★ very tight, much ribbs
0,50 ★ nice cup packaging, lubricant included
3,75 ★ | ★★★★☆
The cup comes with a bag of lubricant. The cup's neck has a small hole for controlling the vacuum. There is a sticker sealing the hole. To use the cup, the sticker should be removed. The sticker can be applied again after insertion or for advanced controll of the vacuum a finger can be used to shut the hole. When the tunnel is filled to the end and the sticker is applied again a strong vacuum will render pulling out almost impossible. The cup or more precisely the soft inner "onahole" can be reused. To do so, one have to clean the "onahole". Rip out the inner part and clean it like every other onahole. The "onahole" can be turned inside out. Now one traded the vacuum for a small, easy to maintain onahole. The cup is very tight and with it's small ribbs high stimulating. When reused it is soft, tight and provides nice stimuli. Beware, it is loud.
When it is new, it almost rip off your little friend. When reused, nice and soft.
My summing: ★★★★☆