Why We Build LAKE Sunglasses From TR90 (And Why You'll Feel the Difference)

There's a moment every summer that ruins a pair of sunglasses. Maybe they slide off your head when you lean over the dock. Maybe they get sat on, stepped on, or shut in a car door. Maybe they just spend three months baking on the dash and come out warped. We've watched it happen too many times — to our own glasses, long before we started making them.

So when we set out to build LAKE Sunglasses, the frame material wasn't an afterthought. It was the whole conversation. And the answer we kept coming back to was TR90.

What TR90 actually is

TR90 is a thermoplastic material — a flexible, high-grade polymer originally engineered in Switzerland and used widely in performance eyewear and sports frames. If that sounds technical, here's the plain-English version: it's a frame material that bends instead of snapping, shrugs off heat instead of warping, and weighs almost nothing on your face.

A lot of frames out there are made from cheaper plastics that look fine in the box and fall apart by August. TR90 sits at the other end of the spectrum. It's the kind of material that earns its keep on the water, on the trail, and in the bottom of a beach bag where lesser sunglasses go to die.

The benefits you'll notice from day one

They're ridiculously light. This is the first thing people mention. TR90 frames feel barely-there, which matters when you're wearing them from the morning paddle to the evening bonfire. No pressure points behind your ears, no constant pushing them back up your nose. After a while you sort of forget they're on — which is exactly the point.

They bend without breaking. TR90 has a kind of memory to it. Twist a frame, sit on it, cram it into a glove box, and it tends to flex back toward its original shape rather than cracking. We're not promising they're indestructible — no sunglasses are, and we'd be lying if we said otherwise — but they hold up to real life far better than rigid plastic or brittle budget frames.

They handle heat and sweat. Lake days mean sun, and sun means heat. TR90 resists the kind of warping that turns a good pair of sunglasses into a crooked mess after one hot afternoon. It also stands up well to sweat, sunscreen, and the occasional accidental dunk.

They're comfortable for people with sensitive skin. TR90 is widely regarded as hypoallergenic, which is a nice bonus if metal frames have ever left you itchy or irritated. (If you have a known sensitivity, it's always worth checking the specific frame details — but for most people, this material is about as easygoing as it gets.)

They feel like quality. There's a difference between cheap-light and premium-light, and you can feel it the second you pick a pair up. TR90 gives our frames a smooth, solid, well-made feel without the weight that usually comes with it.

The eco-friendly part — honestly

We want to be straight with you here, because "eco-friendly" gets thrown around a lot in this industry and it deserves better than a vague buzzword.

TR90 is a plastic. It isn't compostable, and it won't biodegrade on a lakeshore — so the most honest thing we can say is please don't litter it. What makes it a genuinely more responsible choice comes down to a few real things:

Durability is sustainability. The most wasteful sunglasses are the ones you replace every season. A pair built to survive years of abuse means fewer frames in the landfill and fewer impulse replacements. Longevity is one of the most underrated environmental features any product can have, and TR90 delivers it.

Less weight, less footprint. Lighter frames mean less raw material per pair and lighter shipping, which trims the energy and emissions tied to getting them to your door. It's a small thing per unit, but it adds up.

Cleaner materials. Quality TR90 is typically free from BPA and many of the harsher chemicals found in cheaper plastic frames — a better story for the people wearing it and the facilities producing it.

Recyclability. As a thermoplastic, TR90 can be recycled rather than being a guaranteed one-way trip to the trash, provided it's processed properly.

So no, we're not going to tell you a pair of sunglasses will save the planet. But choosing a frame that lasts, weighs less, skips the nasty additives, and can be recycled is a meaningfully better path than the disposable alternative. That's the version of "eco-friendly" we're comfortable putting our name on.

Built for the way you actually live

Here's what it comes down to. We didn't choose TR90 because it tested well on a spec sheet. We chose it because it fits the life our sunglasses are made for — the early launches, the long afternoons, the gear that gets tossed in a bag and asked to perform anyway.

Lightweight enough to forget you're wearing them. Tough enough to forgive the rough days. Comfortable enough to keep on from sunrise to last light. And made from a material we feel good standing behind, for your comfort and for the lake we'd all like to keep clean.

That's the standard for every pair of LAKE Sunglasses. Come find the pair that's ready for your next day on the water.