Terrain 365 has always been renowned for its performance in extreme environments, and its latest release—the Invictus-BL folding knife—literally embeds the concept of “all-weather reliability” into its DNA. Specifically engineered for divers, naval personnel, and anyone who needs a dependable blade in highly corrosive conditions, this knife features a unique all-magnetic construction that completely eliminates common issues with traditional knives: seizing up, rusting, and difficulty cleaning after seawater exposure.
Every single metal component—from the blade and screws to the bearings and pocket clip—is crafted from β-titanium alloy and Terravantium™ superalloy. This proprietary material contains zero iron, meaning it will never rust or become magnetized, and remains fully functional even after prolonged exposure to saltwater, chemicals, or bodily fluids.
The Invictus-BL sports an 8.9 cm (3.5-inch) drop-point blade with a thickness of 3.2 mm, featuring clean, streamlined lines. Although Terravantium™ isn’t a conventional tool steel, it offers impressive hardness and edge retention, making it suitable for both everyday cutting tasks and rugged use.
What truly sets this knife apart is its magnetic-assist opening system: two embedded neodymium magnets inside the handle provide gentle assist when opening the blade and securely hold it closed during carry—preventing accidental deployment. This innovative design entirely replaces traditional mechanical springs, significantly enhancing reliability and simplifying maintenance. After use in seawater, the knife only requires a quick rinse to stay in perfect working order.
The handle is machined from Grade 5 titanium with a stonewashed finish—resistant to scratches and smudges. Its ergonomically contoured shape ensures a secure grip, even while wearing gloves. Measuring 11.7 cm (4.6 inches) in length and 1.3 cm (0.5 inches) thick, the handle offers excellent balance and control. The titanium liner lock is robust and easy to operate, while the three-position, removable titanium pocket clip supports ambidextrous carry in multiple orientations.
Weighing just 123 grams (4.3 oz), the Invictus-BL feels substantial without being cumbersome—making it an ideal companion for daily carry, maritime operations, or underwater expeditions.
The Invictus-BL is now available for purchase at a price of $475 USD. For users who genuinely require full non-magnetic, corrosion-proof performance, this price is well justified. With this knife, Terrain 365 once again proves that professional-grade gear doesn’t require compromise—extreme performance can coexist with elegant design.