The Crystal Anos can be used anally because it has a series of 8 bumps, in increasing sizes, before ending in a larger bump at the beginning of the handle. Even if it went behind this more pronounced butt, it has a flared base.

It can also be used vaginally, of course, and that's what I went for. The bumps are delightful.

It is odorless, non porous, food-safe acrylic, which mimics glass, except that if it's scratched, it is no longer porous. It's still a pretty high-ranked material in terms of safety, at level 9. It's perfectly smooth, with no seams.

It's very long, at 10 1/4" total length and 6 1/4" length before the handle and 1 1/4" thick in the section right before the handle, which makes it versatile. The gradually increasing bumps are especially good for anal, as you can start smaller, go slow, and work your way up.

It's kind of abstract and not metal, therefore a bit discreet and easier to slip in the luggage.

The smoothness and the ridges provide a great deal of sensation. I like the length because you get a nice handle out of it. It definitely does the job.

It takes both water and silicone lube, which is nice. Avoid scratching it and store in a bag. Clean with 10% bleach and rinse very well.

Discardable.