This butt plug is the Rolls Royce of butt plugs (and the one with the bulbs for prostate massage is good too, but this smooth long one is better). It is the best I have ever used. The jelly ones are squashy and will work, but take a lot longer, and are actually harder to get in than the pyrex! Metal can be heavy and slip out so you have to do extra work to hold it in. The pyrex cleans better (you can boil it and share it with a friend . . . ). Lube it up (of course!) and it goes in smooth, no friction that can cause tearing but you can have that pleasure pain blend with it as you stretch open, and it preps you for anal sex wonderfully. My partner is well endowed, which is great except in anal sex it is harder to prep for him. After this pyrex butt plug, anal sex is comfortable, pleasurable, and arousing right away. It preps you that well! If you don't think you like anal sex, get some Eros lube and this plug, put in the plug, keep it there for 5 minutes while you play with your partner in another way, and you will be ready to go. Very hot. Also, if your partner is using the plug (after cleaning), you can see through the glass right inside him/her. It is totally hot. For BDSM, it exposes your sub even more in this experience to be able to see through the plug. Enjoy. Don't bother with other plugs, I've tried a lot in many materials - just shell out the bucks for the pyrex plugs and you'll never go back. Smooth, hard, goes in easily, stretches you out better and doesn't soak up the lube too quickly, and it feels cool, hard and erotic. You won't regret buying this.