The Senso Vagina's material is Jelly. Sadly, jelly is very porous, it cannot be sterilized (do not share) and it's not the most durable. Although with proper maintenance you can extend the life of any toy, with this kind of material you can't expect too much. Even though it's jelly I enjoyed the sensation that the material gave me, it's very soft and pliable, add ribs to that and your set!
It has a nice ribbed texture inside that is accentuated by the very tight squeeze of the toy. Also, the short length of the toy makes the penis pop out from the other end, I kind of like that though, it stimulates the head of the penis every time it pops in and out.
The material has some chemical smell to it but it's only when you put your face against the toy that you can actually smell it, it's nothing that would hold me back on using this toy.
The shape of the toy is kind of strange, it's shaped like a headless, legless woman with a vagina the size of a butt... Needless to say it's strange. I don't mind it though, I'll live! The toy is 4 inches long and the size of the hole is about the size of a fingernail, it's very tight. It's a struggle to get into and I'm almost certain it will tear, I'll keep you informed on that through a follow up review if it tears. I don't mind the toy being 4 inches long, but keep in mind the penis will pop out from the other side (on average sizes+). If you don't mind that (I don't, I actually think it feels nice when it pops out the other hole), and you don't mind the extreme tightness this toy is for you.
The toy is small enough for travel but it's not very discreet if you actually have it at plain site or if someone goes into your backpack at takes it out: it's shaped like a headless legless woman with breasts and a vagina on the back, it screams sex toy. If you are going to travel and you want to take it with you though, I recommend storing it in a zip-lock or sandwich bag, because it's jelly it will stick to anything and everything, so the bag will keep it dust-free. Just put it on a Ziploc or sandwich bag and then store it in another type of bag or where ever you want to store it :).
To care and maintain your jelly Senso Vagina:
1. After each use, wash with very mild soap and water and let dry (do not turn inside-out).
2. Use only water-based lubricant, although you COULD use silicone I don't recommend it.
3. Store in a dark, cool place.
4. Store in a Ziploc or sandwich bag, to protect your toy from dust.
It comes packaged with a free sample of lubricant.
For the $23.00 price, I would recommend other toys before recommending this one. There's simply better toys out there with better materials for a better price. For example the Super Head Honcho. But if you are aiming for a very tight toy, I'm pretty sure that you can't go tighter than this.