Pi is just one of Tantus' rapidly disappearing elements line. Designed as an anal probe, it's also something you can use vaginally or in a harness. In theory it's been designed to provide both G-spot and P-spot stimulation, but the floppy design makes it less than ideal for that.

Pi and all of the elements are made of Tantus's fantastically soft silicone. It's non-porous and phthalates free, although it does have a tendency to retain scents like that of flavored lube or scented soaps. It can also retain scents of butt play, and if it does that to you I'd suggest a very thorough washing and letting it air out for a few days. It's very smooth but does have some drag to it. It's also very squishy between the fingers.

Pi is a total of 5 1/2" tall with just under 5" being insertible. The base is just over 3" long in the long direction and just over 2" wide the short way. There's also a raised section at the nose of the base that can provide extra stimulation to the clit if you use it vaginally. The insertible part is shaped like a cross between graduated anal beads and a plug, with the base of the extension being solid in appearance and about 3 1/4" around to allow room for the included bullet to slip in to the base. From the base of the extenstion, going up 2" will land you right in the middle of the dip between the neck and the next "ball." You get a total of 3 bumps after the neck, with the smallest at the tip being slightly tapered and only about 2" around. The extension is also extremely flexible, almost to the point of being floppy. If you wanted to, you could use this in a harness with a small o-ring.

The bullet on the other hand, is about 2" long or so, and runs on 3 LR44 batteries. It's got one mode of vibration, and while not the loudest ever, isn't exactly whisper quiet either. Think like those really annoying cell phones that you can hear vibrate from across the room. It's also got a really nice o-ring on it, meaning that you can safely play in the shower as well.

It's not super obvious as to what this is right off the bat, but I'd still recommend keeping it tucked away. Its relatively small size and flexibility make it easy to travel with as well.

Because of the extreme flexibility, Pi fails at being able to do anything for the G-spot or the prostate. The bulbs do provide an interesting sensation vaginally, and the vibrations are centered right where the bullet tucks in but can be felt through the raised nub at the nose so you'll get some decent clitoral stimulation as well. As an anal toy, this had me worried at first. I wasn't sure if it was going to be able to go in, but with a little bit of help it was in. The bulbs felt very nice with slow thrusting, and while the neck/base wasn't uncomfortable, it didn't stay in either. Which is a shame since that's where the vibrations are located, so anally you won't get much vibration unless you hold it in place.

Because this is silicone you can clean it in any number of ways. If you want to keep it all to yourself you can wash with warm soapy water. If you want to share with a partner you can either use a condom, or you can bleach it or boil it. Water based lube is your safest bet as silicone lube may cause damage but you can always do a patch test on the base of the toy to check for reactions.

You can either store it in the original packaging, or in a plastic bag or toy pouch.

Mine came directly from Tantus in a plastic bag with a cardboard top. Other members of the elements line have come in plastic boxes. There wasn't any real information on mine except that it's Tantus's great silicone.

I'm still deciding just how much I like this one. It really doesn't do much for me vaginally, although I didn't not like the sensations. I do enjoy a very slow thrusting anally and that's what keeps me coming back to this one. It's too flexible to be really effective in a harness as a strap on, but it's not too bad to control with a hand. The neck doesn't want to stay in at all, so it's fairly useless as a plug, but it's still fun to play with. If you're looking for a relatively small anal probe that will last you a long time and not be very rigid, I'd get this one while you still can.