Rina is part of a sister series of onaholes; her sister being Roa. I own both sisters and I'm basing my review on how they stack up together as much as how they stand up apart. Both sisters are known for their cameltoe entrance and petite frame. There are tiny breasts on the front which add a little charm for those who like things on the smaller side. If you are a fan of either novelty aspect, then this may be for you. It also comes with an art card in the box of Rina from the cover without the outwear on, as well as a packet of water based lube. The included lube is pretty thick and sparing, so I'd recommend having a smoother one on hand for use; Onatsuyu Juicy Lotion is my lube of choice.
First off, for the price, about $25 as of this review, you can't really go wrong on this more entry level toy. There is a G Spot in the middle, alternating nubs and ribs, and a vacuum "cervix" chamber at the end. The internal tunnel is 10cm, which is about 4", to the entrance of the "cervix" chamber, and 12cm total, which is about 4.75", including the chamber. My erect length is somewhere between 4.5" and 5", so this falls right in my sweet spot as far as length is concerned.
I enjoy the suction and feeling of the chamber "kissing" the glans before it slides in. This feature I feel is Rina's strong suit. Compared to her sister, Roa, Rina has the best suction and feeling at the chamber for me. However, Roa has a more pronounced cameltoe entrance, which is much more stimulating upfront than Rina. Rina's entrance is a little on the tighter side, not uncomfortably so but enough to diminish the fun of the cameltoe aesthetic some. I find Rina's lips hug me tight as I glide in and out, but Roa's lips are far more caressing and maintain that cameltoe look more in motion.
Overall impact pleasure and sensation wise, I'd say Rina is a solid 7/10 for me. The end chamber being the real selling point. The tunnel is very soft and smooth feeling overall, with little impact until you hit the end and get that "kiss". Most of the stimulation is coming from the end for me, with the middle being more a caress, and a firm hold at the entrance.
Value for the money wise, I'd rate it a solid 8/10. The material is nice and soft with minimal odor after first wash, it has antibacterial silver (AG+) ions interspersed in the material to keep things clean and smelling fresh long after cleaning. Rina, as well as her sister, is a dual layer design, which is more fragile overall than single layer.
Be cautious when cleaning and drying, as the inner material is so soft and prone to wear and tear if too rough. Be gentle opening when cleaning, so as not to tear anything. That said, after a month of use, probably a half dozen uses or so, she has held up well for me with only very minor tearing, a couple millimeters, on the tip of the opening. Everything else has held up and still feels fresh, especially after powdering with cornstarch/baby powder.
The bottom line is if you are looking for a soft, smooth, and straight ride with a tender kiss at the end, then this may be for you. Bear in mind your erect length, though. If you are much over 5" when erect, then this may not be for you. I imagine anyone over that will have a tough time getting the full impact out of the best feature of the chamber at the end, let alone risk breaking through the end at higher lengths. Just don't expect too much impact from the tunnel itself in terms of oomph, as it is more subdued than some other onaholes on the market. I would recommend this to fans of cameltoe who prefer a slick and petite exterior, and a smooth glide.