Terrain 365 was founded in 2018 by master bladesmith Michael Vagnino and product designer Patrick Ma. Both came from backgrounds rooted in real-world use rather than trends. Michael began making knives in the mid-1990s and eventually earned his Master Bladesmith rank, developing a deep understanding of exotic alloys and dendritic materials along the way. Patrick built his career designing gear for professionals who rely on their equipment in demanding environments. Together, they set out to create knives that could survive salsmurfer, humidity, grit, and extreme conditions where traditional steels often fail. That mission ultimately led to their proprietary Terravantium dendritic cobalt alloy, a material that doesn’t rust, pit, or stain and behaves very differently from conventional steel.

Once I started digging into what Terrain 365 was doing and what their knives were made of, I was hooked. It felt like something the industry doesn’t talk about enough and probably should. Thanks to the folks at Terrain 365, I’ve had the chance to spend time with a few of their knives, and today we’re looking at one that sits well outside my usual comfort zone: the Invictus-Bali Ti.

A balisong. Yes, really.

That’s not a knife style I’ve ever discussed here before, and it’s not something you typically see being used for daily cutting tasks. I had never owned or seriously used a balisong prior to this, so this review comes with a genuine learning curve. Not only did I have to learn how to open and close the knife safely, but I also got to put Terravantium through real use at the same time. The first few days were rough, but I caught on quickly. Having opened my SOG PowerLock the same way for years definitely helped, although the Invictus-Bali Ti will absolutely bite you if you get careless.


Comfort, Handling, and Ease of Use

Opening the Invictus-Bali Ti involves flipping the safe handle outward and rotating the knife until the blade locks into the open position. It’s hard to describe in words, and there are countless videos online that do a better job visually, but once it clicks, it feels intuitive. Before any of that happens, though, the knife is secured by a spring-loaded latch that keeps everything locked while it’s in your pocket or stored.
This latch is worth calling out because it’s genuinely well executed. To disengage it, you squeeze the handles together and the latch springs open on its own. A lot of balisongs use passive latches that you have to manually move out of the way, and having that spring-assisted action makes opening the knife easier and more fluid. It’s a small detail, but it improves the overall experience.
Once the latch is open, the action is incredibly smooth. The Invictus-Bali Ti runs on ceramic bearings at both pivots, and the lack of friction is immediately noticeable. It’s one thing to have a smooth folding knife with a bearing pivot, but having two pivots moving simultaneously is on another level. There’s essentially zero resistance between moving parts, and the result is an action that feels effortless. It’s satisfying, borderline addictive, and if I had the courage to learn proper balisong tricks, this thing would probably never leave my pocket.

The handles are machined from titanium and feature subtle milling that adds traction without being aggressive. The milling looks good, but more importantly, it helps maintain grip while flipping and during use. Holding a knife together via two separate handle halves feels strange at first, but I’ve come to appreciate it. When closed up in the open position, the two halves form a solid handle that’s surprisingly comfortable despite the lack of heavy contouring.

There is a corner on one of the handle arms that can feel a bit pokey depending on how you grip it, but it’s no worse than the occasional hotspot you find on pocket clips or frame lock cutouts. It’s hard to design a knife without at least one minor irritation point, and this one never rose above being a mild annoyance.

Jimping is another area where the Invictus-Bali Ti surprised me. I don’t normally associate jimping with balisongs, but it’s used thoughtfully here. You get jimping on the thumb ramp which is known as a kicker, the section of the blade between the sharpened edge and the pivot pins. Traditionally, this area exists to prevent the edge from contacting the inside of the handle, but Terrain 365 added jimping that allows your hand to index the knife more like a standard folder. That detail made the knife feel far more natural during actual cutting tasks.


Pins, Carry, and Pocket Clip

The Invictus-Bali Ti uses tang pins rather than zen pins, and that’s a design choice that sparked a bit of research on my end. Zen pins are replaceable and often preferred by people who do heavy flipping, while tang pins are generally associated with better feel and more solid engagement. Having no experience with zen pins, I can say the tang pins here feel excellent and fit the knife’s purpose well.

Carry is handled by a titanium pocket clip mounted on the bite handle. This placement is intentional and smart. If the clip were on the safe handle, it would rotate in your hand during flipping, creating friction and discomfort. Mounted on the bite handle, the clip stays out of the way and keeps flipping smooth. The clip itself is milled, has a good amount of spring, and offers deep carry. In the pocket, it keeps the knife secure, and in hand, it tucks neatly into the palm and essentially disappears during use.

All of this brings us to the blade, which is really why most people are here. Terravantium isn’t a steel in the traditional sense. It’s a dendritic cobalt alloy made up of a cobalt matrix with hard carbide structures dispersed throughout. The easiest way I’ve found to explain it is to think of chocolate chip cookies. The carbides are the chips, evenly distributed throughout the material. As the blade wears and is sharpened, new carbides are exposed, allowing the edge to stay aggressive rather than rounding off.

It’s a fascinating material, completely non-ferrous, rustproof, and unlike anything else commonly used in knives today. And with that groundwork laid, it’s time to see how all of this theory translates into real cutting performance.

Blade and Performance

The blade features the same profile found on the rest of the Invictus lineup, a drop point design that feels familiar but purposeful. It’s fairly thick at .155 inches (3.937 mm), putting it close to something like a Hinderer XM-18. That thickness isn’t there for looks. It’s a clear indication that this balisong is meant to work.

A working balisong? Yes, and Terrain 365 means it. What’s the point of a high-end titanium balisong paired with a high-performance alloy if you never put it to use? The blade shape lends itself well to a wide range of daily chores. Breaking down piles of cardboard, cutting twine from hay bales, opening frozen food packaging, or even trimming a loose thread. This knife has plowed through numerous boxes and handled general cutting tasks exactly like any regular folder I’d normally reach for.

Because of the blade thickness, it can feel a bit wedge-like when pushing through dense material, but that’s expected. What I love most about using this knife is how the handles clamp down on the tang in a way that almost makes it feel like a fixed blade. There’s a level of confidence there that it’s not going to fold or do anything unexpected, which goes a long way during harder use.
In terms of performance, it holds its own against many high-performing steels. After some use, it did lose that razor-slicey feel, but it maintained a toothy, aggressive edge for a long time. That’s just the nature of Terravantium. It’s toothy by design due to the exposure of carbides at the edge. This material doesn’t sharpen to a highly polished apex like modern super steels, and that’s not a drawback. That toothy edge excels at cutting rope, cordage, and fibrous materials.

Paper testing doesn’t tell the full story here. With Terravantium, you need more of a drawing or pushing motion to achieve clean cuts, rather than relying on a laser-thin edge. It’s different, and it caught me off guard at first, but it has consistently impressed me. As an everyday carry knife, it’s performed extremely well, and I’ve never found myself wishing I had something else in my pocket. Add in the corrosion resistance, and this is a blade you can carry daily without hesitation, spending far less time worrying about rust or frequent sharpening.

That said, it doesn’t sharpen like modern steel, and that’s worth mentioning. Its hardness is on the lower end, so diamond stones bite into it easily, almost like a simple carbon steel or something akin to 420. It sharpens quickly and doesn’t require extensive deburring or progression to higher grits. Sharpening Terravantium is honestly wild, and it’s nowhere near as difficult as I expected going into it.

Who would have thought you could take a knife with deep heritage and merge it with truly cutting-edge materials like this? It’s been done before, but this feels like a different level altogether. The Invictus-Bali Ti is smooth, enjoyable to flip, and genuinely capable as a cutting tool. Its performance keeps pulling me back to it, and if you’ve never looked into Terrain 365, this might be the knife that makes you stop and pay attention.

Specs:
OAL: 8.125"
Blade Length: 3.75"
Blade Thickness: .155"
Closed: 4.125"
Construction Type: Balisong/Butterfly
Approx. Weight:
4.5oz / 126g