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The Oakley Sielo 9288 sunglasses bring together retro-inspired round frames and modern performance features in a women's lifestyle design that works from trail hikes to city streets. The round silhouette softens angular features while the mixed-material construction—a lightweight BiO-Matter™ frame front paired with sleek C-5 metal temples—keeps the weight down without sacrificing durability. The neon yellow temple tips on the olive variant and the rose gold accents on the raspberry crystal variant add unexpected pops of personality.
Part of the Mikaela Shiffrin Signature Series, the Sielo reflects input from one of the most successful alpine skiers in history and Oakley partner since 2019, bridging performance and everyday style in lifestyle eyewear.
Prizm Lens Technology
Every Sielo 9288 variant features Oakley's Prizm™ lens technology, which fine-tunes color by filtering specific wavelengths of light. Prizm Brown Gradient enhances warm tones for variable light conditions. Prizm Deep Water Polarized cuts glare while boosting greens and blues for water environments. Prizm Rose Gold increases contrast in bright conditions. Unlike simple tints that just darken your view, Prizm lenses manipulate the light spectrum to sharpen details you'd normally miss—uneven terrain on a trail, the texture of pavement ahead, or subtle shifts in surface contours.
The frame's Unobtainium® nosepads increase grip as you sweat, so the glasses stay put during a run or a long walk in summer heat. Steel temples add structural integrity. The Sielo is prescription-ready, accepting single-vision and progressive lenses, so you don't have to choose between clear vision and Oakley's optical performance. All lenses provide 100% UVA, UVB, and UVC protection up to 400nm.
The BiO-Matter™ frame material is both impact-resistant and flexible, a combination that matters if you toss your sunglasses into a bag or wear them during active movement. At 136mm temple-to-temple, the Sielo offers a large fit that provides good coverage without feeling oversized. The round shape reads as approachable and less aggressive than Oakley's sport-focused shields, making the Sielo an easy match for casual outfits, from linen shirts to denim jackets.
Product Details
Product DetailsModel
0OO9288Shape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsColor Code
928802Color Description
Matte Olive InkLens Color
Prizm Brown Gradient
Color Code
928805Color Description
Crystal RaspberryLens Color
Prizm Rose Gold
Color Code
928806Color Description
Matte LilacLens Color
Prizm Grey Gradient
Color Code
928804Color Description
Matte StonewashLens Color
Prizm Deep Water Polarized
Frame Color
BrownColor Code
928803Color Description
Polished Brown TortoiseLens Color
Prizm Bronze Polarized
Color Code
928807Color Description
Polished ChromeLens Color
Prizm Violet
Frame Color
BlackColor Code
928801Color Description
Matte Black InkLens Color
Prizm Grey Polarized
Color Code
928809Color Description
Matte Ginger TortoiseLens Color
Prizm Brown Gradient
Size Details
Size DetailsBridge Width
17.00Temple Length
143.00Size
5717-143
Bridge Width
17.00Temple Length
143.00Size
5717-143
Bridge Width
17.00Temple Length
143.00Size
5717-143
Bridge Width
17.00Temple Length
143.00Size
5717-143
Bridge Width
17.00Temple Length
143.00Size
5717-143
Bridge Width
17.00Temple Length
143.00Size
5717-143
Bridge Width
17.00Temple Length
143.00Size
5717-143
Bridge Width
17.00Temple Length
143.00Size
5717-143
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Frequently Asked Questions
Are the Oakley Sielo 9288 sunglasses prescription-ready?
Yes, the Oakley Sielo 9288 is prescription-ready and can accommodate single-vision, progressive, and bifocal lenses. The frame's construction supports prescription lens installation while maintaining the Prizm lens technology benefits. You can add your prescription during checkout to combine vision correction with Oakley's advanced optics.
What is Oakley Prizm lens technology and how does it work?
Prizm lens technology fine-tunes color by selectively filtering specific wavelengths of light, enhancing contrast and making details sharper. Unlike traditional tints that simply darken your view, Prizm lenses boost certain colors while muting others to improve visual clarity in specific environments. This reduces eye strain and helps you see terrain features, obstacles, and depth more clearly.
What is the difference between Prizm and Prizm Polarized lenses?
Prizm lenses focus on enhancing color and contrast for specific activities, while Prizm Polarized lenses add glare reduction from reflective surfaces like water, snow, and roads. Both offer 100% UV protection. Choose Prizm if color enhancement is your priority, or Prizm Polarized if you need to combat glare alongside color optimization, especially for water sports or driving.
Who is Mikaela Shiffrin and why does she have a signature Oakley collection?
Mikaela Shiffrin is an Olympic gold medalist and the most successful alpine skier in World Cup history with over 100 victories. She has partnered with Oakley since 2019, collaborating on signature eyewear including the Sielo sunglasses and Flight Deck goggles. Her signature series combines performance features from her skiing career with lifestyle designs for everyday wear.
What face shapes work best with the Oakley Sielo's round frame?
The Oakley Sielo's round frame shape works particularly well for angular face shapes including square and rectangular faces, as the soft curves balance sharp jawlines and cheekbones. The 136mm temple width provides a large universal fit that accommodates most face sizes. The round silhouette creates a feminine, contemporary look that softens facial features.
What is BiO-Matter frame material?
BiO-Matter is Oakley's bio-based frame material made from at least 56% bio-based carbon content derived from castor oil rather than fossil fuel sources. It offers the same lightweight durability and impact resistance as traditional O-Matter while incorporating more sustainable materials. The BiO-Matter frame front on the Sielo keeps weight down for all-day comfort.
Compare With Similar Frames
How the Oakley Sielo 9288 Sunglasses stacks up against the closest alternatives we carry.
- Aviator shape offers a different aesthetic for those who prefer angular frames over round
- Slightly lower starting price point at $141.66
- Classic aviator style that pairs well with a wider range of outfits
Read the full comparison
Oakley Sielo 9288 vs Oakley Feedback 4079: Round vs Aviator
Both the Sielo 9288 and Feedback 4079 are women's lifestyle sunglasses from Oakley with Prizm lens technology and prescription-ready frames, but they serve different style preferences. The choice comes down to frame shape and the look you want.
The Sielo 9288 features a round frame that softens angular features and creates a retro-inspired, contemporary aesthetic. Its mixed BiO-Matter and C-5 metal construction keeps weight minimal, and the Mikaela Shiffrin collaboration brings athlete-tested features like Unobtainium nosepads and three-point fit. The round shape works especially well for square or rectangular face shapes, balancing sharp jawlines with curved lines. Starting at $204, it's positioned as a modern lifestyle frame that transitions from active wear to everyday use.
The Feedback 4079 takes the classic aviator route with teardrop-shaped lenses and a more traditional silhouette. Aviators tend to complement round and oval faces by adding angular definition. The Feedback's lower starting price ($141.66) makes it more accessible, and the aviator shape is a versatile classic that pairs with everything from sundresses to leather jackets. However, it lacks the Sielo's signature athlete collaboration and the modern round aesthetic that's trending in women's eyewear.
Choose the Sielo 9288 if: You prefer round frames, want the Mikaela Shiffrin signature series, have an angular face shape, or gravitate toward retro-modern styling with performance features built for active lifestyles.
Choose the Feedback 4079 if: You prefer aviator frames, want a lower price point, have a round or oval face, or prefer the timeless aviator aesthetic over contemporary round frames.
At a Glance
Oakley Feedback 4079 Sunglasses
Pros:
- Aviator shape offers a different aesthetic for those who prefer angular frames over round
- Slightly lower starting price point at $141.66
- Classic aviator style that pairs well with a wider range of outfits
Cons:
- Aviator shape may not soften angular face shapes as effectively as round frames
- Less modern/contemporary aesthetic compared to the Sielo's round silhouette
- Not part of a signature athlete collaboration like the Sielo's Mikaela Shiffrin series