FT London Gjack 2 “Bioskin” Vibrator Review

I’m a very curious person by nature, so when I noticed that Spectrum Boutique was carrying the Gjack 2 vibe by FT London, I emailed to ask about this “Bioskin” business. The toy’s maker says that Bioskin—what FT London calls the material the Gjack is made from—is “as close to the human body as possible”!

It’s a bold claim, but what does it actually mean? Well, that the Gjack 2 is soft, basically. The vibe’s top layer is a silicone coating, and beneath that is some sort of foamy layer, which makes the toy squishable. The exterior feels like so many other luxury vibes—it’s a silky-smooth matte silicone finish—but then I can only describe the soft layer as being like memory foam. See me squishing it here (vid includes sound):

So, though I can’t agree that Bioskin feels like “the human body”—I mean, seriously, whose penis has big squishy ridges like this, or feels silky on the outside?—I’m glad that the Gjack 2 exists. It’s an interesting option for anyone who’s ever found a hard insertable vibe too much for their body.

Product Details

The Gjack 2 almost looks like it was inspired by a “fantasy” dildo because of all its ridges. It reminds me of both the (nonvibrating) Tantus Echo Super Soft and Uberrime Night King, previous textured favorites of mine with a whole helluva lot of horizontal ridges running down their shafts.

But, unlike your typical fantasy toy, the Gjack is standard-sized: 5″ insertable length and 1.5″ maximum diameter. The head is slightly tapered, and phallic; it’s also the squishiest part of the vibe because the mechanical core only extends halfway up into the head.

Usually I don’t much care about product packaging, but the Gjack 2 comes in an attractive tube. It includes a storage pouch and a branded charging cord, which is helpful if you’re like me and you have too many vibrator cords.

There are 6 different vibration levels—plus up and down buttons so you don’t have to cycle through all the speeds just to go down a level (a tragic problem). The Gjack’s controls also include third button so the user can cycle through the five patterned settings. And if you do find a particular pattern you like (I’m fond of the fourth), you can turn the vibration strength up or down while remaining on that pattern, an option I’ve never experienced in any other vibe.

How It Feels

When I got the Gjack 2, I had a hard time getting over the strangeness of the material. It’s definitely different from any silicone toy I’ve had, because of that memory-foam-like feel. Once I got used to the new sensation, I started to really enjoy the Gjack. It’s so much better to clench around than a normal vibe, because of the soft feel. That said, the Gjack’s motor casing does add a very hard layer underneath the squishy one, so I’d argue that overall the toy feels less realistic in use than most dual-density silicone dildos, like VixSkin.

And as for the Gjack’s other non-realistic feature, all the ridges…they’re great when I want more stimulation than a realistic dildo can provide. I like to turn the Gjack on to one of the lower steady vibe settings, and squeeze around it for little bit as a warmup. The squishy ridges are intriguing to clench and bear down on. But soon I find myself thrusting this vibe, because the Gjack’s ridges provide so much more stimulation when they’re moving.

I do have to say that I don’t think the Gjack is the best G-spotting toy. The head seems small compared to the ridges underneath. Plus the shaft has a slight elliptical curve: the lowest ridge sticks out the same amount as the toy’s head, so it’s difficult to get real pressure on my front wall. Instead of being really a G-spot or prostate toy, IMO, the Gjack is best suited for those who like to feel texture moving near their entrance especially (or just everywhere!).

So how is the vibration quality? Well, it’s not bad. It’s also not outstanding. I’m not a power queen, but I find myself turning up the Gjack’s vibration strength pretty fast. The vibes start out somewhat rumbly, but low-powered rumbly. (See my discussion of buzzy vs. rumbly bullet vibes here.) Then they progress to being buzzy fairly quickly. Because I don’t like my vibration to be too penetrating, too overwhelming, I’m satisfied with the Gjack’s mid-level power. I think it’s a good match with the softness of the material, for folks who are on the more sensitive side. If you’re looking for stronger vibes, though, I’d recommend a toy like the similarly ridgy Fun Factory Abby G instead of the Gjack.

One really outstanding thing about the Gjack 2 is its battery life. I have problems with running down some toys—especially the Stronic Real, because I frickin’ love that thing—but I’ve only had to charge the Gjack once (after the initial charge) while testing it, despite using it for hours. I kept expecting it to die on me while I was performing the final testing for this review, but nope, the vibe kept chugging along. I’m confident the battery life is at least three hours, which is pretty damn long.

But Is “Bioskin” Safe?

So what is Bioskin, exactly? Well, we don’t really know for sure: FT London (a.k.a. Fun Toys) doesn’t disclose that information, preferring to keep the exact composition of “Bioskin” a trade secret.

To some extent I can understand this lack of transparency: copycat toys abound in the sex toy industry. If a maker does put out something truly unique, like the b-Vibe Rimming Plugs, then rest assured that within a few years, knock-off versions of questionable quality will pop up on Amazon for a third of the original’s price.

I stated at the beginning of this review that the outer layer of the Gjack is silicone. That’s something I’m sure of, although Fun Toys/FT London has been hazy about the subject in the past. To be totally sure, I did my own flame test on the Gjack 2. My results echo those of the Big Gay Review’s even-more-thorough test of the original Gjack. I held a match to the outside of the Gjack 2 for as long as it would burn, and the toy did not burst into flames, just developed a black, charred exterior. 

After I took the above pic, I wiped down the surface, and the black ash mostly went away, leaving a smaller brown mark. All this is consistent with how we know silicone will behave when exposed to fire.

And as for the spongy, memory-foam layer between the silicone and the mechanical core? I can’t be sure of that, though there’s some speculation that the layer is a type of elastomer. Whatever it may be, the Gjack as a whole is safe because its silicone coating fully encloses the toy. It’s sealed, watertight, and can be fully sanitized. That’s why I’m confident that the Gjack is a fully body-safe insertable.

Overall Thoughts

The FT London Gjack 2 is an interesting change of pace in my dildo-thrusting regimen. It’s squishy, it’s very clench-around-able, and it vibrates. Though I don’t think the vibrations are going to win any awards for sheer power, they add to the experience of movement. I can’t help squeezing around the toy’s soft “Bioskin” ridges as I slide the Gjack in and out.

I would recommend this toy to folks who are looking for a gentler insertable vibe that still has some attitude—something that’s less streamlined (and softer) than a classic slimline vibrator. It’s all about the squishy ridges with this vibrator!

If you’d like to check one out, you can find the Gjack 2 here. You can save 10% on anything at Spectrum Boutique when you use code FELICITY at checkout!

My thanks to Spectrum for sending me this toy in exchange for my honest review. I always tell my readers when something does not work for me or when I think it’s badly designed. If you want to support my writing, you can make your next sex toy purchase—whatever it is—by clicking through my affiliate links and then buying.