If there's anyone out there who hasn't try them, I must recommend them. They adjust to body temperature, and you can use them without lube because they are smooth and they glide well, unlike rubber, which tends to grip to your skin and pull painfully. And if you want, you can put them in the microwave for a few 10 second intervals to warm it up, or put it in the fridge for a few to cool it off. All in all, very versatile, and surprisingly easy to use, even for anal virgins or people who are just afraid to try it. And depending on what kind you get, they come with a pretty little velvet drawstring bag to keep them in A caution however, don't try to stick them in your girl's mouth because you can easily chip teeth. Remember they're glass, treat them as such!