The good: It is not just a sex toy, but also a health instrument. It helps you to exercise the sphincter muscle and massage your prostate. The main thing is to get the "Super O". You can achive waves of waves of orgasm without touching your penis at all (the formal way is never touch your penis). Super O is something you have never felt before untill you try this item; it isn't like regular penile orgasm. The bad: It has learning curve. You won't get Super O once you insert it. It requires practice. To be honest with you. I haven't achive Super O and I know I am not alone. But the journel toward Super O is also an exciting thing. You will get much better reward when you can do it with effort.