This vibrating prostate massager is made out of a firm TPR rubber with a smooth finish except for the stimulation nubs located at the external end where the vibrating bullet is located. It starts with a fairly narrow tip and widens out using two progressively wider bulges.
The TPR rubber is an okay material, but considering it is designed for anal use I personally would have preferred that it be made out of silicone so that it's easier to clean and sanitize. There was a slight rubber scent to it when it was first unwrapped, but nothing excessive.
The vibrating prostate massage is well designed. It starts thin enough for beginners to insert, but widens out enough to give a satisfying, full feeling. The curve was just right to get the tip where it needed to be in order to massage my prostate while the other end vibrated against my perineum.
The vibrating prostate massage performed really well for both P-spot and G-spot stimulation. The shape worked well for both P-spot stimulation combined with perineum massage for me and when my wide used it she said the shape was great for G-spot simulation and massaging her clit at the same time.
This prostate vibrating toy is fairly easy to clean and care for since the vibration is provided by a removable bullet style vibrator. Once that is removed it is easy to clean with soap & water or a specialized toy cleaner. The one difficulty with this toy is that it is made from TPR rubber instead of silicone.
TPR rubber rates only a 7 out of 10 on the Eden Safety Scale - http://www.edenfantasys.com/sex-guides-and-tips/guides/materials/tpr
This is a bit of a lint magnet so I would recommend using some sort of cloth storage bag.