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The Oakley Heliostat 9231 sunglasses bring a modern edge to Oakley's legendary high-wrap design. Inspired by the iconic Fuel Cell, the Heliostat refines that classic rectangular silhouette into something sleeker and more contemporary—built for riders, anglers, and anyone who needs serious coverage without the bulk.
Built on Oakley's High-Wrap Heritage
High-wrap frames like the Gascan and Fuel Cell have been Oakley staples for decades, and the Heliostat carries that DNA forward. The full-rim rectangular frame wraps around your face for maximum peripheral coverage and protection from wind, glare, and UV rays. But this isn't just a retread—the Heliostat updates the formula with a more refined profile and thoughtful details that make it work for 2020s lifestyles.
The frame is constructed from O Matter™, Oakley's proprietary stress-resistant material that's both lightweight and incredibly durable. It won't shift or deform over time, even after years of daily wear. Internal Unobtainium® earsocks and molded-in nosepads increase grip when you sweat, so the frame stays put during long rides or active days. Oakley's signature three-point fit ensures the frame only touches your head where it needs to—no pressure points, just all-day comfort.
One standout feature: the Heliostat's temples are thin and rigid, designed specifically to fit under a hat brim without interference. Motorcyclists, fishermen, and outdoor workers will appreciate how cleanly these integrate with a cap or helmet.
Prizm™ Lens Technology: See More Detail
The Heliostat is available with Prizm™ lenses, Oakley's advanced contrast-enhancement technology. Unlike standard tints that just darken your view, Prizm lenses selectively filter specific wavelengths of light to boost color and contrast in real-world environments. The result is sharper vision, reduced eye strain, and the ability to spot details you'd miss with ordinary sunglasses—whether that's reading the road ahead, tracking a fish in the water, or navigating technical terrain.
Prizm options include polarized variants like Prizm Deep Water Polarized (ideal for fishing and water sports), Prizm Black Polarized (versatile everyday use), and Prizm Tungsten Polarized (optimized for bright, variable light). All lenses are made from Oakley's impact-resistant Plutonite® material and block 100% of UVA, UVB, UVC, and harmful blue light up to 400nm.
Prescription-Ready Performance
The Oakley Heliostat 9231 is prescription-ready, so you can add your Rx and get the same performance optics you'd expect from Oakley. The 61mm lens width and high-wrap geometry accommodate a wide range of prescriptions, making this a practical choice if you need vision correction but refuse to compromise on coverage or style.
The Heliostat fits medium to large faces comfortably. It's a go-to for anyone who wants the protection and field of view of a wraparound frame with a design that's been refined for modern tastes. From the job site to the boat to the bike, this frame handles it all.
Product Details
Product DetailsModel
0OO9231Shape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsColor Code
923104Color Description
Matte Grey SmokeLens Color
Prizm Tungsten Polarized
Frame Color
BlackColor Code
923105Color Description
Matte Black CamoLens Color
Prizm Deep Water Polarized
Color Code
923103Color Description
SteelLens Color
Prizm Black
Frame Color
BlackColor Code
923101Color Description
Matte BlackLens Color
Prizm Grey
Color Code
923107Color Description
ClearLens Color
Prizm Sapphire Polarized
Frame Color
BlackColor Code
923106Color Description
Polished BlackLens Color
Prizm Ruby
Frame Color
BlackColor Code
923102Color Description
Matte BlackLens Color
Prizm Black Polarized
Color Code
923108Color Description
Grey SmokeLens Color
Prizm Black
Frame Color
BlackColor Code
923118Color Description
Matte BlackLens Color
Prizm 24k Polarized
Color Code
923116Color Description
Grey SmokeLens Color
Prizm Bronze
Color Code
923113Color Description
Blue SteelLens Color
Prizm Sapphire PolarizedLens Features
polarized
Frame Color
BeigeColor Code
923117Color Description
Matte Stone Desert TanLens Color
Prizm Grey PolarLens Features
polarized
Color Code
923114Color Description
Transparent PoseidonLens Color
Prizm Deep Water PolarizedLens Features
polarized
Frame Color
BlackColor Code
923129Color Description
Matte BlackLens Color
Prizm Violet
Frame Color
BlackColor Code
923125Color Description
Matte BlackLens Color
Prizm Deep Water PolarizedLens Features
polarized
Frame Color
BlackColor Code
923128Color Description
Matte BlackLens Color
Prizm Deep Water PolarizedLens Features
polarized
Frame Color
BlackColor Code
923127Color Description
Matte BlackLens Color
Prizm Ruby
Frame Color
BlackColor Code
923130Color Description
Matte BlackLens Color
Prizm Sapphire
Frame Color
BlackColor Code
923126Color Description
Matte BlackLens Color
Prizm Jade
Frame Color
BlackColor Code
923123Color Description
Matte BlackLens Color
Prizm Sapphire PolarizedLens Features
polarized
Color Code
923124Color Description
Matte Grey SmokeLens Color
Prizm Sapphire PolarizedLens Features
polarized
Color Code
923122Color Description
Matte Transparent JadeLens Color
Prizm Black
Color Code
923137Color Description
ClearLens Color
Prizm 24k PolarizedLens Features
polarized
Frame Color
BlackColor Code
923138Color Description
Matte Grey Ink FingerprintLens Color
Prizm Black
Size Details
Size DetailsBridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
Bridge Width
16.00Temple Length
129.00Size
6116-129
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Frequently Asked Questions
Are the Oakley Heliostat 9231 sunglasses prescription-ready?
Yes, the Oakley Heliostat 9231 is fully prescription-ready. The frame's high-wrap design and 61mm lens width accommodate a range of prescriptions, from low to medium power (+4.00 to –4.00). Oakley offers prescription options including single vision, progressive, and specialized lens materials for higher prescriptions. You can add your Rx lenses while keeping the same Prizm™ technology and UV protection.
What is the difference between the Oakley Heliostat and the Fuel Cell?
The Heliostat is a modernized evolution of the Fuel Cell design with a sleeker, more contemporary silhouette. Both share the high-wrap rectangular frame DNA, but the Heliostat features thinner, more rigid temples designed to fit seamlessly under hats, updated internal Unobtainium® earsocks, and molded-in nosepads. The Heliostat also offers newer Prizm™ lens options. Think of it as the Fuel Cell refined for today's needs.
Do Oakley Heliostat sunglasses work well with hats?
Yes, the Heliostat was specifically designed to be hat-compatible. The thin, rigid temple arms fit softly over the ear and slide right underneath a hat brim without interference. This makes them ideal for motorcyclists, fishermen, construction workers, and anyone who regularly wears a cap or helmet with their sunglasses. The frame retention is strong enough to stay secure with or without a hat.
What is Oakley Prizm™ lens technology and how does it work?
Prizm™ is Oakley's spectral tuning technology that selectively filters specific wavelengths of light to enhance color and contrast. Unlike standard tints that just darken your view, Prizm lenses boost certain colors while reducing others based on the environment—making details pop and reducing eye strain. The technology was developed over 15 years using hyperspectral imaging to analyze how light behaves in real-world conditions, then engineering lens dyes to optimize vision for specific activities.
What size face do Oakley Heliostat 9231 sunglasses fit?
The Oakley Heliostat 9231 is designed for medium to large faces. With a 61mm lens width, 16mm bridge, and 129mm temple length, it offers generous coverage and a secure high-wrap fit. The three-point fit design and adjustable Unobtainium® nosepads help customize the fit, but if you have a smaller face, you may want to try them on first or consider a different Oakley model with a smaller frame size.
Do Oakley Heliostat sunglasses provide UV protection?
Yes, all Oakley Heliostat lenses provide 100% UV protection. The lenses are made from Oakley's proprietary Plutonite® polycarbonate material, which blocks 100% of UVA, UVB, UVC, and harmful blue light up to 400nm. This protection is built into the lens material itself—not just a coating—so it won't wear off over time. The high-wrap frame design also provides excellent side coverage against peripheral UV exposure.
Compare With Similar Frames
How the Oakley Heliostat 9231 Sunglasses stacks up against the closest alternatives we carry.
- More compact 60mm lens width—better for smaller faces
- Lower starting price point ($99.15 vs $150)
- Original iconic design with proven military/fishing heritage
- Classic Fuel Cell design with strong brand heritage
- Similar price range ($100–$236) to Heliostat
- Proven fit and comfort for medium to large faces
- More casual, lifestyle-oriented square frame shape
- Similar price range ($141.38–$237)
- Iconic Holbrook design with broader mainstream appeal
Read the full comparison
Oakley Heliostat 9231 vs. Gascan vs. Fuel Cell: Which High-Wrap Frame Is Right for You?
If you're shopping for Oakley's signature high-wrap rectangular sunglasses, you're likely comparing the Heliostat 9231, the Gascan 9014, and the Fuel Cell 9096. All three share Oakley's iconic wraparound DNA, but each serves a slightly different purpose. Here's how they stack up.
Oakley Heliostat 9231: The Modern Evolution
The Heliostat is Oakley's latest take on the high-wrap frame, designed to refine what made the Fuel Cell and Gascan legendary. It features a sleeker, more contemporary silhouette with thin, rigid temples engineered specifically to fit under hats—a game-changer for motorcyclists, fishermen, and outdoor workers. The updated internal Unobtainium® earsocks and molded-in nosepads deliver superior grip and comfort compared to older models.
At 61mm lens width, the Heliostat offers generous coverage without feeling oversized. It's prescription-ready and available with the latest Prizm™ lens options, including Prizm Deep Water Polarized and Prizm Tungsten Polarized. If you want the best of Oakley's high-wrap heritage with modern refinements, the Heliostat is the choice.
Best for: Riders, anglers, and active users who need hat compatibility and modern styling with maximum coverage.
Oakley Gascan 9014: The Compact Original
The Gascan is where Oakley's high-wrap legacy began. With a 60mm lens width, it's slightly more compact than the Heliostat, making it ideal for smaller to medium faces. The Gascan has proven itself in military and fishing applications for years—it's tough, reliable, and starts at a lower price point ($99.15).
However, the Gascan's older temple design doesn't integrate as smoothly with hats, and the smaller lens size means less peripheral coverage. If you have a smaller face or prefer a more understated look, the Gascan is a solid choice. But if you need maximum coverage and modern features, the Heliostat pulls ahead.
Best for: Smaller faces, budget-conscious buyers, and fans of the original compact high-wrap design.
Oakley Fuel Cell 9096: The Classic Inspiration
The Fuel Cell is essentially the Heliostat's predecessor—a larger version of the Gascan with a bold, aggressive look. It offers similar coverage to the Heliostat (61mm lens width) and has a loyal following among Oakley enthusiasts. The Fuel Cell is priced similarly to the Heliostat ($100–$236) and comes in a wide range of colors and lens options.
The trade-off? The Fuel Cell's thicker temples don't work as well under hats, and the overall design feels bulkier compared to the Heliostat's refined profile. If you love the classic Fuel Cell aesthetic and don't need hat compatibility, it's still a great frame. But for most buyers, the Heliostat offers the same coverage with better everyday versatility.
Best for: Fans of the classic Fuel Cell look who prioritize bold styling over modern refinements.
Our Recommendation
For most buyers, the Oakley Heliostat 9231 is the best choice in this category. It takes everything that made the Gascan and Fuel Cell iconic—wraparound coverage, O Matter durability, three-point fit—and refines it with thinner temples, better grip technology, and seamless hat integration. The prescription-ready design and latest Prizm lens options make it the most versatile high-wrap frame Oakley offers today.
Choose the Gascan if you have a smaller face or want to save money. Choose the Fuel Cell if you're loyal to that specific classic look. But if you want the most modern, functional version of Oakley's high-wrap design, the Heliostat is the frame to beat.
At a Glance
Oakley Gascan 9014 Sunglasses
Pros:
- More compact 60mm lens width—better for smaller faces
- Lower starting price point ($99.15 vs $150)
- Original iconic design with proven military/fishing heritage
- Slightly lighter weight due to smaller frame size
Cons:
- Smaller lens coverage—less peripheral protection
- Older temple design not optimized for hat compatibility
- Less modern aesthetic compared to Heliostat's refined silhouette
- Fewer contemporary Prizm lens options available
Oakley Fuel Cell 9096 Sunglasses
Pros:
- Classic Fuel Cell design with strong brand heritage
- Similar price range ($100–$236) to Heliostat
- Proven fit and comfort for medium to large faces
- Wide range of lens and frame color options available
Cons:
- Thicker temples don't integrate as well with hats
- Slightly bulkier profile compared to Heliostat's sleeker design
- Older internal grip technology vs. Heliostat's updated Unobtainium placement
- Not as refined for modern everyday wear
Oakley Holbrook XL 9417 Sunglasses
Pros:
- More casual, lifestyle-oriented square frame shape
- Similar price range ($141.38–$237)
- Iconic Holbrook design with broader mainstream appeal
- Flatter lens profile—better for certain prescriptions
Cons:
- Less peripheral coverage than Heliostat's wrap design
- Not optimized for high-speed or high-wind activities
- Heavier acetate frame vs. Heliostat's lightweight O Matter
- No hat-compatibility engineering like Heliostat temples