Along with the Hitachi, I reviewed a few attachments for this powerhouse vibrator. This review was published with non-exclusive rights on another website. I’m reposting it here (with a few edits.)
The Jollies Curved Hitachi Attachment is an insertable accessory for the Hitachi wand vibrator. It comes packaged in a simple plastic bag. The attachment is a lovely pink color with shimmers throughout. It’s smooth and seamless, and made of 100% medical grade silicone.
Silicone is non-porous and hypo-allergenic, as well as phthalates free, so it’s safe for your body. Silicone repels dirt and bacteria, and can easily be cleaned with soap and water, or sterilized by running it through the dishwasher (top rack), boiled, or cleaned with a 10% bleach solution. Make sure to sterilize the attachment if you plan on sharing it with someone else. Only water-based lubricants should be used with the attachment.
The attachment is 7” long from base to tip. The bulb part that fits over the Hitachi head is about 3” wide at its widest, and the opening is about 2” wide. While the attachment is marketed for the Hitachi, it will fit other wand style massagers with head size similar to the Hitachi. It slips easily over the massager head and grips it so that it won’t slip or slide around. It is also easy to remove when finished. It’s not necessary to apply lube inside the attachment to put it on the massager’s head, and doing so will cause it to move and twist around.
The insertable part of the attachment measures about 5” long along the curve, with about 4” insertable when measured straight top to bottom. This part has a gentle curve for g-spot stimulation. It is firm, yet flexible, and measures about 1 1/4” in diameter.
It works best to use lubricant and insert the attachment before turning on the Hitachi; otherwise the strong vibrations make insertion difficult. Once inserted with the Hitachi turned on, the attachment transmits the vibrations evenly up and down its length, and will cause you to clench your vaginal muscles around it to hang on for the ride.
Unless the Hitachi is angled (somewhat awkwardly) so the base comes into contact with your clitoris, this provides just direct and intense internal stimulation. This may be ideal for those looking for g-spot orgasm without other stimulation.
The attachment can also be used for direct clitoral stimulation by using the insertable piece against the clitoris. The attachment dampens somewhat the intense vibrations of the Hitachi for those who find it too much to use without a barrier of some kind.
Intense anal stimulation is also possible with the attachment, although the tip of the attachment is a bit difficult to insert due to its flexibility.