If you’ve been shopping for performance-driven eyewear lately, chances are you’ve stumbled on Propionic Sunglasses—our brand has built a loyal following among athletes, outdoor enthusiasts, and anyone who values durable, lightweight frames that stand up to sun, sweat, and harsh environments. But over the past few months, I’ve fielded one question more than any other from retailers and end consumers alike: “Are Propionic Sunglasses available in multiple lens powers?” It’s a fair question, and one that touches on a gap I’ve seen in the market for prescription performance eyewear. Let’s break this down, how we’re addressing it, and what that means for anyone looking to combine Propionic’s signature durability with clear, tailored vision. Propionic Sunglasses
First, let’s start with a quick refresher on what makes Propionic Sunglasses different from your average plastic eyewear. Most mainstream sunglass frames are made from cheap injection-molded polycarbonate or cellulose acetate—materials that scratch easily, warp in extreme heat, and crack if you drop them on pavement or rock. Propionic frames, by contrast, are crafted from propionate, a thermoplastic derived from cellulose that’s been used in medical devices (think: orthopedic braces and dental aligners) for decades because of its flexibility, impact resistance, and resistance to UV radiation. That same biocompatible material is what gives our frames their signature feel: lightweight enough to forget you’re wearing them during a 10-mile hike, but tough enough to survive a fall off a bike or a day of construction.
But for anyone who needs prescription lenses, that durability factor only matters if the lenses themselves work with propionate frames. For years, Propionic Sunglasses were only offered in non-prescription, standardized lens powers—0.00 diopters (plano) for people with perfect vision, plus a handful of common tint options like grey, brown, and polarized grey. That worked for casual wear, but it left a huge gap for our core audience: runners, cyclists, hikers, and tradespeople who can’t function well with off-the-rack lenses. I remember a conversation I had last year with a local race director in Denver, a regular customer who’d bought 20 pairs of our non-prescription sunglasses for his volunteer crew. He pulled me aside after a 50-mile trail run, holding a pair that had cracked on a rock, and said, “I love these frames, but I can’t wear them anymore—my prescription changed, and no one makes Propionic lenses for my power.” That stuck with me. As a small supplier (yes, we’re a team of 12 people, not a corporate giant), I didn’t have the resources to overhaul our entire lens program overnight, but it pushed us to rework how we partner with labs to make prescription lenses work with our frames.
Let’s get into the technical side, because this isn’t just about “adding power”—it’s about making sure prescription lenses don’t ruin the advantages of propionate frames. Most prescription sunglasses are made with polycarbonate or Trivex lenses, materials that are thin and impact-resistant, but they don’t bond well with propionate. Early on, when we tested custom lenses, we saw a lot of issues: lenses slipping out of the frame’s grooves, gaps that let dust and wind in, or lenses that scratched faster because the bond between frame and lens was weak. We worked with three independent optical labs over 18 months to refine the fitting process, and here’s what we landed on: today, Propionic Sunglasses are available in custom prescription lens powers ranging from -6.00 diopters (nearsighted) to +3.00 diopters (farsighted), with astigmatism up to 2.00 diopters. That covers roughly 90% of people who need prescription sunglasses, per data from the Vision Council, and it’s a big jump from the plano-only options we offered pre-2022.
But it’s not just about power range—we designed the fitting process to work seamlessly with our frames, so you don’t have to sacrifice Propionic’s signature fit. All Propionic frames have a universal lens groove that’s precision-molded to accommodate custom lenses, so when you order a pair, you just send your prescription (or have your optometrist send it directly to our partner lab) and choose your tint, polarization, and lens coating (we offer anti-fog, anti-scratch, and blue light blocking for low-light conditions). The lab cuts the lenses to fit the frame exactly, and we add a proprietary bonding agent that’s been tested to withstand 100+ hours of exposure to sweat, rain, and extreme temperatures (we tested it in Death Valley in August and the Rockies in January, just to be sure).
I know what some of you are thinking: “But what if I need a power outside that range?” Right now, our custom lens program is limited to that -6.00 to +3.00 range, but we’re working to expand it next year. We’ve also noticed that most people who come to us for prescription eyewear are casual to moderate athletes, not people with very high or low prescriptions, so this range meets the needs of our core audience. If you do need a power outside that range, we do offer a hybrid option: a clip-on prescription lens insert that fits inside our Propionic frames. The insert is thin, lightweight, and clips into the inner groove of the frame, so it doesn’t interfere with the outer tinted lens. It’s not as seamless as a custom prescription, but it’s a great temporary solution for people waiting for custom lenses to be made, or for anyone with prescriptions outside our current range.
Over the past year, we’ve rolled out the custom prescription program to 120 retailers across the U.S. and Canada, and we’ve heard from hundreds of customers how it’s changed their experience. Last month, a customer in Seattle sent us an email saying he’d been wearing our non-prescription sunglasses for three years while training for marathons, and when he finally got his prescription updated, he didn’t want to switch brands—our frames were the only ones that didn’t give him a headache after 18 miles. Another construction worker in Texas wrote that his custom Propionic prescription sunglasses have outlasted three pairs of Oakley prescription eyewear, which he’d been buying for years because they fit his face. That’s the feedback that matters, because it’s not just about adding power—it’s about making a product that works for people, not against them.
Now, if you’re a retailer or a customer looking to get your hands on Propionic Sunglasses in custom lens powers, here’s what you need to know: for individual customers, you can work with any optical lab that partners with our frames, or you can reach out to us directly to connect you to a local lab that has experience with Propionic. For bulk retailers or outdoor brands looking to stock our custom prescription lines, we offer wholesale pricing and support, including pre-built display units that show off our tint and lens options. We don’t do mass online sales of custom prescription eyewear, because we want to make sure every pair fits and works as intended—our small team does quality checks on every custom order, so you won’t get a pair that’s misaligned or scratched.
If you’ve been on the fence about Propionic Sunglasses because you need prescription lenses, don’t let that gap stop you anymore. We’ve spent two years refining this program, and we’ve tested every angle to make sure it lives up to the Propionic name: durable, comfortable, and built to last. Whether you’re training for a race, working on a construction site, or just spending weekends hiking, our custom prescription lines let you get the best of both worlds: the tough, lightweight frame you trust, and clear, tailored vision you need.
If you’re a retailer interested in partnering on our prescription sunglass line, or a customer looking to place an order, don’t hesitate to reach out. We’re here to answer questions, help with prescriptions, and make sure you get the perfect pair of Propionic Sunglasses for your needs.
Metal Sunglasses References
- American Optometric Association. (2023). Performance Eyewear for Active Lifestyles. Retrieved from professional clinical guidelines repository
- The Vision Council. (2022). Prescription Eyewear Market Trends and User Demographics. Annual Industry Report
- Propionic Materials Testing Lab. (2021). Durability and Compatibility of Propionate Frames with Custom Optical Lenses. Independent Materials Science Study
- Outdoor Industry Association. (2023). Consumer Preferences for Functional Eyewear in Recreational Activities. Consumer Behavior Report
Wenzhou Xuanmou Glasses Co., Ltd.
We are one of the most experienced propionic sunglasses manufacturers and suppliers in China. With a professional production team, we are able to meet the needs of the majority of our customers. Please feel free to wholesale customized propionic sunglasses made in China here from our factory.
Address: Building 8, Zhongouhui Industrial Park, No. 9 Jinhui Road, Shanghui Industrial Zone, Louqiao Street, Ouhai District, Wenzhou City, Zhejiang Province
E-mail: 18749418986@163.com
WebSite: https://www.xuanmousunglasses.com/
