What Are Floating Frames Made Of?
A deep dive into the materials that make Rheos sunglasses water-ready and adventure-approved.
Most sunglasses aren’t built for life on the water. That’s why we designed ours differently—from the inside out.
🧪 Meet TPX®: Our Floating Frame Material
Rheos floating frames are made from a lightweight, highly durable material called TPX®. It’s part of the polyolefin family—used in marine gear and medical equipment—and is 40% lighter than plastic, which is typically used in eyewear.
Key features of TPX:
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Floats in both freshwater and saltwater
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Resistant to heat, chemicals, and UV degradation
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Hypoallergenic and BPA-free
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Ultra-light for all-day comfort
It’s what makes our shades feel barely-there on your face—and never missing in action after a drop in the lake or ocean.
🔧 Precision Manufacturing Matters
Because TPX behaves differently than standard plastic or acetate, each Rheos frame requires extremely precise molding and cooling techniques. We manufacture in small, quality-controlled batches to ensure a consistent, featherlight fit across every style.
Unlike generic frames that are stamped out in mass production, our floating frames are:
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Molded at lower pressure and temperature to preserve the buoyancy
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Calibrated for even weight distribution (so they float evenly and sit comfortably)
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Stress-tested for flexibility and durability under real-world coastal conditions
This extra attention means our frames take a bit longer to produce—but the result is premium performance gear made for a life well-lived outdoors.
🕶 Lenses Built to Match
Pair our floating TPX frames with HydroClear Nylon Optics lenses and you’ve got:
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Lab-tested as clear as glass lenses
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Polarized anti-glare vision
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100% UV protection
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Scratch and saltwater resistance
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Anti-fog and anti-glare tech
Together, this combo delivers the lightest, most functional water-ready sunglasses on the market.
🌞 Explore the Collection
All Rheos frames float—so no matter which style you choose, you’re covered for beach days, paddle sessions, boat rides, and all your adventures.