This is a really fun way to help slow down foreplay and make sure more than one or two places get attention. Also sparks a bit of creativity.
Wasn't exactly sure what to expect when we purchased this, but it proved to be fun and useful all around for both the one "wearing" and the one "using".
Attempting to keep this tasteful but also helpful... It does hold temperature well, if that's your thing. The spirals are nice, but as it is hand blown, mileage may vary on how pronounced they are and therefore feel. Being glass, it's obviously inflexible and that does need to be taken into consideration. The curve on it is just right. And the smooth, round tip was also most pleasant.
Didn't use the other side, probably won't for it's intended usage; however, it does make a rather convenient handle, which is why I chose this one over the other similar one without the butt plug.