All right, this one’s a long time in the making. I’m going to attempt to be as thorough as possible here, although I’m also reserving the right to edit this and improve upon it with time. Right now I have no photos (there are PLENTY online in other reviews), although those may get added later if I feel it’s necessary. But let’s get down to business.
What is it?
The Bon4Plus is a silicone chastity device. It follows the pattern of famous chastity devices like the CB6000 in providing a clear tube that connects to a clear ring that goes around your balls, with the two secured together with a lock. The base principle is what’s generally referred to as a trapped-ball chastity cage, and it’s quite literally using your testicles, and your desire not to destroy them, to anchor the tube in place around your cock and keep you from having access to it, preventing you (theoretically) from masturbating, or having sexual contact with another person. Standard stuff.
The Bon4 line is considered by some to be a “copy” of the Birdlocked silicone chastity cage, even spawning a very angry website accusing Bon4 of all sorts of nasty things by copying the Birdlocked. This seems childish and extremely shortsighted, as the devices share little in common besides the general shape (which is basically inescapable) and the material they’re built out of. There’s little to no doubt that the Bon4 is inspired by the Birdlocked, but it was clearly designed in an effort to improve upon some of its perceived weaknesses. For instance, whereas the Birdlocked is only one piece (some reviews claim it requires three hands to install), the Bon4 is two (plus anchor bits), allowing much easier installation. Vent hole counts and locations are different, as well, more sizing combinations are available, and other subtle differences. Point is, the Bon4 is a different company’s attempt to improve upon the concept introduced by the Birdlocked. They’re different enough that there’s plenty of opinions about which is better, which I think further reinforces why the anger is pointless.
Now one thing I failed to find clearly spelled out ANYWHERE online, whether on Bon4’s own website or the various reviews I read, was what differentiates the Bon4Plus from the Bon4. It included descriptions of what was included in the package, but the name implies there’s something BETTER about it. After enough digging, some hunches, and a purchase, it finally became clear what the Bon4Plus is versus the Bon4. It is, quite simply, the Bon4 (unmodified) and the Bon4L (the longer, larger tube for more impressively-sized cocks) full kits packaged together inside a nice black drawstring bag. That’s it.
The advantage of the Plus, though, is that since normally the Bon4 and Bon4L each come with two sizes of ring that are appropriate to their matched cage size, the Plus comes with all four ring sizes, allowing you a lot more flexibility to choose appropriately. Since generally speaking, the shorter the cage the more comfortable it is (weird as it sounds, allowing room for erections is actually not as smart as you think; you want the cage as close to your flaccid size as possible) and harder to pull out of, even a larger guy may prefer the shorter cage, despite needing a wider ring than would normally come with it. Or someone with a long but thin shaft, or a taper, or other unusual, one-size-doesn’t-fit-all cock configurations might need a long cage but a narrower ring. This kit ensures you’re well-covered.
It also means you get two full sets of all the fittings. A Bon4 or Bon4L consists of the cock tube, whatever size ring you choose, a plastic strap to attach the two together by threading it between the connectors on the cage and around the ring, a plastic locking pin that goes through the two layers of the strap, and a metal padlock that secures to the locking pin. A Bon4 set of either size includes one extra plastic strap, and one extra locking pin, along with a set of plastic numbered locks for getting through metal detectors while maintaining accountability. So the Bon4Plus set ends up including, in total, four straps, four locking pins, and two padlocks in addition to the two tubes and four ring sizes. A pretty good value that will reduce the chances of you needing to order replacements if you break yours.
I imagine this is also a great value for, say, a gay couple with dramatically mismatched cock sizes who like to enjoy chastity together (I’m stretching, I know, but maybe they exist?), or a dominatrix who wants to lock up two differently-sized subs at the same time. I don’t know. A value two-pack is just kind of a funny idea I had to through out there.
How easy is it to install?
This depends partially on how much experience you already have with one of these. The first time was mildly tricky, but knowing what I was doing helped. Since then, it’s been a lot easier. The trickiest part is simply getting your balls through the ring. Due to the malleability of the silicone, and its grippiness, and the fact that it’s a closed loop, this is MUCH harder than the CB6000. I found the best technique was to ignore the instructions to lube the ring (for now; lube is VERY important as I’ll explain in the comfort section) which just makes your scrotum way too slippery, and instead focus on pulling as much of your scrotum as possible through the ring, preferably toward one side, and then popping one of your balls through into the bunched-up collection of scrotum on the other side. Once you have one through, the other’s very easy to pop through.
Once that’s done, you have to push your cock through the ring, as well, so your entire packaged is surrounded by it. Depending on how aroused you are this is various levels of tricky and uncomfortable. But I found if flaccid enough, I can retract my shaft inward fully, push the bunched-up shaft skin under the edge of the tube, and then pop my cock back out on the other side. Easiest method.
Next comes the tube. Now this is usually the hard part with any cage, and it’s more so with the grip of the silicone. I took up advice online and borrowed a thigh-high nylon sock from my girlfriend for this task, pushing it through the tube and out the hole at the tip, leaving roughly the length of my cock hanging out the back end of the tube where I needed to enter. I then put my cock in the sock, and gently pulled the sock from the other end until it gripped and began pulling me into the tube. At that point it gets much harder as the nylon bunches up in the very small hole and the grip gets tighter. But with enough gentle effort you’ll get it through and find yourself properly secured. This is especially vital if you’re intact or, like me, restoring, and want your foreskin pulled forward.
Then it’s a matter of lining up the three arms of the cage with the notches in the ring, and slotting the strap around and through all the slots, back around the top, and onto the locking pin. By this point from the nylon and other efforts you might need to let your erection subside a bit before you’ll be successful, but otherwise this part’s relatively easy. Overall, installation’s not hard once you get the hang of it.
How comfortable is it?
Okay, so this one’s tricky for so very many reasons. Different people have different expectations of comfort in chastity. For some discomfort is the core point, if not even pain. For others, like myself, we want our normal lives not to be impacted while we enjoy the helplessness of the cage. To this end, I bought this device specifically because reviews billed it as one of the most comfortable.
After the time I’ve spent in it so far (several weeks now), I can honestly say that yes, it’s the most comfortable device I’ve used by far, with some massive caveats.
One thing a few sites touched on was the suggestion of using lube with it. I ignored this the first few days because I didn’t need lube with my CB6000, I didn’t want to lose the grip that made me feel like I couldn’t escape this thing, and I figured I could handle it. Plus, as I said, most treated it like a suggestion.
IT’S NOT A SUGGESTION. Lube is extremely necessary with this cage. It is NOT optional. Not one bit. Why? That silicone grips like a motherfucker. The first night I woke up in severe pain multiple times and in the morning I had to have my girlfriend unlock me so I could switch to the next-largest ring (I’d tried the smallest first, as everyone advises, and assumed this was the problem, later confirming it was a component of it and sticking with the newly-chosen size). But by the end of that day I was still hurting, and sleep was agony. The next day I started to find it itching like hell, checked it, and found MULTIPLE raw skin spots and we had to remove the cage for a few days for me to heal in it.
When it came time to put it back on after I’d healed, I started lubing regularly, and I haven’t had a spot of trouble since. Sleep has been SO much better than the CB6000 and is basically comfortable. Erections are delightfully confining and great at reminding you of your predicament, but not painful, and usually don’t wake me up any more than they did when I wasn’t caged. And day-to-day movement and sitting is mostly fine. I definitely have my discomfort moments with the ring, primarily, but it’s rare that I can’t squirm to a better position or visit a restroom to fix things. Overall, it’s good.
For lubing, the trouble spots seem to be the overall inner part of the ring, the area where the tube meets my scrotum, and the under-side of the post that meets the ring on the underside of my balls. As long as these areas are properly treated, I’m good. Application tends to be morning and evening, but I’ve found on multiple days that if I properly applied it, I can go to bed without adding it, and sometimes even get through the next day, too. It’s random luck, but most of the time it works just fine.
Since it’s silicone, you’ll want to stick to a water-based lube or, according to the instructions, olive oil. I’m using the former.
How hard is it to pee in?
Very, very easy, but not perfect. Unlike the CB6000, the slit at the tip is quite small, leaving very little room to align things. With the CB6000 I could usually chub myself up slightly, filling the cage heavily, and thereby create a perfect seal anywhere along the large slit and go without trouble. With the Bon4 there’s FAR less room for error. Now in my case, the size of the hole and the alignment are FREAKISHLY perfect for my cock. 90% of the time the two holes are aligned almost dead-on, and if i get myself slightly hard I can be assured a clean shot. The remaining 10% requires some adjusting and contorting to get things right, but I’m usually successful. But with the massive range of dick sizes and shape, I can’t imagine I’m anything but lucky here. Your mileage may vary dramatically.
Unfortunately because it’s as closed as it is and the hole’s so small (literally almost the EXACT size of my urethral opening), it’s rather easy to get some urine back in the cage after, even with a clean shot. So despite my perfect fit, it could be a little better. Still, not bad.
I’ve also found, mostly thanks to my consistently good alignment, that I can pull the whole thing through my fly and go at a urinal relatively easily (more so than the CB6000, probably because of the way I can squeeze it as I navigate both flies). I still don’t have the guts to do so in anything but a private bathroom, but then again I was rarely good at pissing with men standing half a foot next to me anyway, so not much has changed there.
How do you clean it?
Cleaning is arguably slightly harder than the CB6000 since it has fewer and smaller holes (just one in the tip and two on the sides of the head), so you can’t use Q-tips as easily, and there’s less room to move around in to pour soap into and use friction to clean yourself. That said, I always found the Q-tips pinched me when I used them in the vents on the CB6000 anyway, and the vents caused issues with the friction method, so I was having to be much more careful. So for cleaning, I mainly either use my finger in the shower, shoving it up the backside of the tube to do my best to get everything soapy (and yes, touching my dick in the process), and into the tip to try to get the head, or I have my girlfriend let me out and properly clean my dick and the cage with soap and water. For the former I also run a hair dryer into all the folds and closed-over areas and into the few holes to try to reduce moisture as much as possible. Don’t want to create any breeding grounds.
Realistically, regular cleanings are much more vital with this one. It seems to build up odor and dead skin cells faster than the CB6000, and the constant application of lube just makes things a little worse. But as the cleaning is relatively easy, it’s not that big of a deal. But if you had any illusion, like I once did, of going your entire time in chastity without your cock getting any freedom, you should probably let that go right now.
How secure is it?
When I first put it on, I was ready to excitedly proclaim that it was much, much more secure than I’d been led to believe, and that I was relatively certain I wouldn’t be able to get my cock out of that very tight cage (unlike the CB6000 which was pretty easy), and even less likely to be able to put it back in undetected.
But since making lube a necessity, that confidence has gone way down. I can easily get to my shaft while cleaning, thanks to the softness of the tube (and my cock), and with the lube, I could probably easily pull myself out the back. From there, I imagine I could even pull my balls out and remove the cage entirely. I haven’t tried, because I’m fighting really hard to use this cage properly, but also because I’m far less confident that I could as easily get my shaft BACK in the cage. But with effort, yeah, I probably could (although I doubt it if I went the full removal route). Still, since my willpower manages to be strong enough to stick to the plan of not coming, and since I’m being let out every few days for cleaning, giving me a chance to touch and feel my cock for a little while, I’m managing. But if your goal is complete loss of access to your cock, this, and from what I hear all trapped-ball cages, won’t do it. It just can’t. Nothing short of a full metal waist unit or a piercing-locked cage will give you that level of security. A very unfortunate reality once you get into playing with this.
Can you masturbate in it?
Yes. Very, very easily.
This is a section I never see in reviews, which surprises me. They focus on how difficult it is to get out of, but ignore how difficult it can be to get off in. The CB6000 was relatively easy. It took some effort, and I risked damage thanks to those damn side vents (and sometimes the seam), but I could jack the whole cage and slowly build myself to orgasm relatively easily. Much worse was the fact that once I did approach the edge in that cage, if I stopped the movement my own spasms combined with the way the hard cage gripped the shaft would actually take over jacking me and carry me right over the edge. Crazier still, with the right level of frustration, a raging erection, and some muscle control, I could actually bring myself fully to orgasm without so much as touching myself. Just by flexing my muscles, I could get the cage to jack me off, even fully clothed! There were a few times, late in the game with that cage, that my mere frustration alone made me wonder if I might set off such an event without any direct effort.
The Bon4 manages to alleviate those last couple problems as best as I can tell, which is good. I don’t have to worry about accidentally coming in my pants while watching porn, or edging myself only to come involuntarily when I stop. But its silicone design makes the rest a lot easier, and I’ve used it heavily to edge myself.
There are a few main, easy techniques for masturbating in this thing:
- Jack my whole package, just like in the CB6000. It’s crazy to look at and awkward, but jacking my entire package, shaft, balls, and all, a small amount in a consistent motion WILL bring me to orgasm, no doubt. It’s a very different sensation, and a slightly slower build, but it gets the job done.
- Gripping just the shaft of my cock through the squeezable silicone cage and pumping that. Actually ends up similar to option 1, since everything’s pretty well attached, but it’s more focused.
- Rhythmically squeezing the head of my cock. Yep. That’s it. Just squeezing it through the cage. I was surprised how easily this built me to orgasm, but it did. This might be partially due to my utter desperation and my body’s need to come any way possible, and/or partially due to my own experiments with minimalist masturbation techniques (I’ve brought myself to orgasm by doing nothing but massaging the head of my cock with lotion in the past). Either way, give me some porn and a minute or so, or no porn and an extra couple minutes, and I’ll have a mess to clean up.
- Like a woman. I’m not kidding here. I can, while fully clothed, place my fingertips on the head of my cock (through the cage), like it’s a clit, and rub it up and down, stimulating the head and jerking my entire package in the process, and build myself to a surprisingly impressive physical high that I suspect, especially in my current state, would roll over into a VERY intense orgasm if I let it. I’ve definitely gotten myself scarily close a few times. Pair it with some porn, and it’s a good time, but scary if you’ve got penalties on the line for coming.
So there you have it. The lack of security in this cage from pullout is NOTHING compared to the lack of security from reaching orgasm. So if you were worried about getting found out by your partner by being unable to reinsert yourself in the cage, you have little to worry about. Just masturbate IN the cage, and you’re set. Having said that, there are two things that are keeping me from actually bringing myself to orgasm (at least until I accidentally go too far) this way:
- I’m committed to what I’m doing. My girlfriend and I have clear rules and penalties in place, and I’ve committed myself to full honesty to her. That means if I do come, I’ll have to tell her, and I’ll have to face serious consequences for it. Right now that means adding half my current sentence on to the end of it.
- Remember what I said about the alignment of the hole at the tip, and the way urine tends to end up back in it? Well, I feel rather confident that if I brought myself to orgasm in this thing, odds are that hole would NOT be properly aligned at that moment, and I’d quickly lose all visual of my cock as I filled the cage with thick, white cum which would be very, VERY difficult to clean well enough without removing the cage. I’d definitely get caught if my goal was to hide it.
So really, this cage relies heavily on your willpower and having someone to answer to. I do NOT recommend this cage for solo chastity play with a virtual keyholder. You’ll quickly figure out how to enjoy yourself anyway and defeat the purpose of it. But I honestly feel that nothing short of a piercing-locked cage would work for solo use. I speak from experience.
I like the Bon4Plus MUCH more than I liked the CB6000, overall, due to massive improvements in comfort and build quality (no splitting seam). But this device, more so than others, relies very, very heavily on being committed to the concept and your keyholder. If you’re either doing this on your own, or you’re doing this to satisfy your keyholder’s kink more than your own, this isn’t the device for you. But if you and your partner enjoy teasing and edging and frustration and you’re using the device slightly more symbolically to avoid an easy orgasm or regular access to your cock while having the willpower to stick to the rules you’ve worked out with your keyholder, it’s really a great device. And if you shop around carefully, it’s really not THAT expensive. I managed to find mine on Amazon, and with tax and Prime shipping, it cost me around $130, which is well below MSRP. Depending on what that kind of money means to you and what you spend on your kinks, I think that’s a pretty reasonable amount of money. Better still if you plan to hold onto it as a spare and/or metal detector-safe alternative to a better-crafted steel cage later on. I’ve seen knockoffs available from import sites, and for all I know they’re legitimate-quality overbuilds, but I can’t speak to their materials or potential contaminants, and most are very shaky about their description, mixing in the word “Birdlocked” interchangeably, and frequently warning that the photos may not be accurate, leaving you uncertain what you’ll actually get. If you’re willing to blow $40-60 on a gamble, maybe it’s worth it. But I felt a little safer getting the confirmed real deal.