“These Lenses Are in a Class by Themselves.” Sail-World Puts basn5 Sunglasses and Tajima Polarized Lenses to the Test
When an independent editor spends an entire summer testing your product, you don’t get to write the verdict. That’s the point.
On September 1, Sail-World.com published a review and interview by North American editor David Schmidt covering basn5 sunglasses and the Tajima polarized lens technology inside every pair. Schmidt has spent decades on the water and has, in his words, worn a lot of sunglasses. He tested two pairs of basn5 through a full summer of sailing, dog walks, and wind-reading on Bellingham Bay before writing a word. Here’s where he landed:
As for reading the wind’s influence on the water’s surface, as I’ve been doing all summer, there’s no question that these lenses are in a class by themselves.
— David Schmidt, Sail-World.com, September 1, 2026
Read the full Sail-World interview →
What Sail-World actually tested
Schmidt’s review pairs were stock builds, the same ones anyone can order: a black basn5 Davenport with non-mirrored Gray 15 Tajima polarized lenses, and a brown basn5 Highway 1 with Brown 15 Black Mirror Tajima polarized lenses. The first things he noticed out of the box, before the optics: the single-material frames (“bereft of paint, rubber bits, and other extraneous decoration”), the absence of any visible branding, and the exposed hinges.
A red-green colorblind editor, seeing green
The detail we can’t stop thinking about isn’t about sailing at all. Schmidt has lived with red-green color blindness his whole life. The box arrived just in time for an evening dog walk:
I didn’t even make it a quarter mile from my house when I noticed something strange: For the first time in my life, I started noticing—and/or separating—different shades of green. While I’ve been dogged by red-green color blindness my whole life, I had apparently reached a point of stasis where I just accepted that entire forests were a single color.
— David Schmidt, Sail-World.com
There is no colorblindness cure in a lens, and we don’t claim one. What’s happening is tint engineering: each Tajima lens color filters targeted parts of the light spectrum to increase color separation, contrast, and detail beyond what the naked eye resolves. The lens material itself — Tajima Urethane, a urethane-based recipe we invented — delivers the optical clarity of glass at a fraction of the weight, with a naked thin-film polarizer that carries tint, polarizing efficiency, and light-transmission control in a single film. That construction, with zero distortion, is why the differences read as dramatic to a first-time wearer. It’s the same technology in every pair of Tajima replacement lenses we cut for customers’ own frames — and we’re the only lens maker in the world offering it in prescription.
The hinge got its own interview question
Schmidt noticed what most reviews never mention: the hinge. In the review’s words, the Davenport’s “triple-stacked hinges…rotate around a single axis and…are each securely fastened to both the lens frames and the legs via six independent screws,” delivering “a satisfying articulation.” In the interview, Steve Rosenberg explains why we built it: the hinge is the most common failure point in eyewear, so basn5’s patent-pending stacked hinge — developed with an elite Austrian hinge maker — acts like a spine for the frame. It stays tight, never goes floppy, and if you do have an accident, it’s replaceable instead of the whole pair.
No logos, on purpose
Asked why basn5 frames carry no outward branding, Steve’s answer in the interview is the closest thing the brand has to a mission statement: “Most sunglasses are billboards… Instead of a logo doing the talking, the design does.” The visible hinge in the gap between frame and temple is the only signature. If you know, you know.
Sailing World reached the same verdict in May
Sail-World isn’t the first sailing outlet to test basn5. Back in May, Sailing World editor Dave Reed put demo pairs in front of sailors at the Helly Hansen Regatta Series in Annapolis and published his own take: “Everyone gave them resounding praise.” Driving the media boat through a full race day, he wrote, “All day long, I never once found myself squinting,” and the frames were “nice and light, to the point that I forgot I was wearing them.” His conclusion ran three words: “We loved them.”
Two editors, two publications, three months apart, testing independently — same verdict.
Get what they tested — two ways. Every basn5 frame — Highway 1, Davenport, and Fort Point — comes standard with Tajima polarized lenses in your choice of 14 lens colors, non-prescription or prescription. Prefer your own frames? The exact same lens technology is available as a replacement lens upgrade for any frame, from any brand — including prescription.
Shop basn5 sunglasses → · Put Tajima lenses in your own frames →