The Thinnest Titanium Folder Just Got Even Thinner.

Price: $139
Where to Buy: Vosteed

Most knife brands treat “slim” as a loose suggestion. They’ll shave half a millimeter off a handle, slap a new finish on the scales, and call it a day. Vosteed’s TiSlim line doesn’t work that way. The Porcupine TiSlim, the brand’s third entry in the series, makes that clearer than ever.

So the real question is: can a knife this thin still feel like a real tool? At 0.315 inches thick, the Porcupine TiSlim is barely wider than a few stacked coins. That number sounds absurd until you hold one. The titanium handles have a cool, deliberate weight to them, and the whole package comes in at just 2.97 ounces. It’s the kind of object that disappears into a pocket and then surprises you when you pull it out. Vosteed first proved this formula with the Parallel in 2024, then refined it with the Raccoon TiSlim last year. This one might be the best yet.

The Porcupine TiSlim isn’t trying to reinvent the folding knife. It’s asking how much bulk you’re willing to tolerate for the sake of convention. Smart move.

Three TiSlim knives deep

Vosteed’s TiSlim line now has enough entries to call it a proper family. The Parallel started as a proof of concept, a knife so thin it made people double-take at EDC meetups. The Raccoon TiSlim followed with the same crossbar lock and a more rounded profile. Now the Porcupine TiSlim arrives with a familiar silhouette and the line’s first top liner lock. If you’ve handled the standard Porcupine, the shape won’t surprise you, but designer Yue Dong has stripped the proportions down to something noticeably different.

Overall length lands at 7.22 inches, right in the EDC sweet spot. You get 3.04 inches of drop-point blade, about as utilitarian as it gets for daily cutting tasks. Caged ceramic ball bearings handle the pivot, and you notice the smoothness the moment you deploy it. The machined titanium pocket clip matches the scales, a small detail that shows consistency across the build.

Each TiSlim attracts a slightly different user. The Parallel was for minimalists chasing the thinnest possible carry. The Raccoon appealed to people who needed a more traditional grip. The Porcupine splits the difference with a wider handle and more surface texture, without sacrificing the line’s signature thinness.

Five configurations ship at launch. Four share Grade 5 titanium handles with 154CM blade steel, a solid pairing with a long track record for edge retention and easy sharpening. The fifth swaps in S90V, a premium powder metallurgy steel, paired with an Acid Wash textured handle. You can spot it immediately in the lineup, and the visual contrast alone makes it feel like the collector’s pick. Whether the jump to S90V is worth the extra $40 depends on how seriously you take your steel.

What actually changed

The biggest functional shift is the lock. Vosteed moved from the Raccoon’s crossbar to a top liner lock, and the difference in daily use is significant. With a crossbar, you pinch both handle scales simultaneously to release the blade, an action that takes two hands and practice. The top liner lock simplifies that to a single-sided release you can operate with one hand. It’s faster, more intuitive, and easier to manage with gloves or wet hands. The trade-off is ambidexterity, since the liner lock and non-reversible pocket clip both favor right-handed carry. For the majority of EDC users, though, this is a clear upgrade in convenience.

Handle texture is the other major improvement. Previous TiSlim models ran with smoother scales that could feel slippery during extended use. The Porcupine TiSlim features milled scales that add grip and visual depth to the titanium surface. That machining extends to the pocket clip, giving the whole knife a more cohesive, intentional look. It’s the kind of detail you appreciate more over time than in the first five minutes.

The handle is also wider than the Raccoon TiSlim, which matters more than you’d think. A wider handle distributes pressure across your palm during cutting tasks, reducing fatigue and hotspots. For people with larger hands, the Raccoon sometimes felt like gripping a thin wafer. The Porcupine corrects that without adding meaningful thickness. Blade steel stays at 154CM across the standard configurations, and the drop-point geometry carries over from the original Porcupine. What you’re getting is a slim folding knife that kept what people liked and fixed what they didn’t.

Who should skip this

Left-handed users should think twice. The non-reversible pocket clip and right-side liner lock make this a right-hand-dominant knife without a practical workaround. If ambidexterity matters to your carry, the Raccoon TiSlim’s crossbar lock might actually serve you better.

If you need a hard-use knife for heavy tasks, this isn’t your best option either. The ultra-slim profile doesn’t offer the same leverage as a thicker folder, and 154CM isn’t built for batoning or heavy prying. People who own a standard Porcupine and love the beefier grip might find the TiSlim too thin for their taste. The base configurations at $139 could also feel light on steel compared to S35VN or 20CV knives in the same bracket. The S90V variant at $179 addresses that, but know what you value before you click.

Who this is for

The Porcupine TiSlim is built for people who carry a knife every single day and resent every unnecessary gram. If your ideal EDC disappears completely into your pocket and shows up only when you need it, this is that knife. As a titanium EDC knife, it feels considered, not compromised. At $139 for the standard configurations, the value is hard to argue with.

Collectors tracking the TiSlim line will want this as the natural next chapter. It addresses the Raccoon’s weak points, adds texture and a more practical lock, and keeps the profile that made the line famous. The S90V Acid Wash edition at $179 is the one to grab if you want the collector’s piece. The Porcupine TiSlim is available now from Vosteed’s site, though some configurations are already selling out. If past TiSlim drops are any indication, don’t wait too long.

Price: $139
Where to Buy: Vosteed

Vosteed’s third TiSlim entry doesn’t just continue the line. It validates it. Three knives in, and the formula keeps getting sharper.