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The Sferoflex 1556 Eyeglasses bring together retro-inspired cat-eye styling and the brand's signature comfort technology in a prescription-ready frame designed for women. Available in two lens widths—51mm and 53mm—and a range of gradient and solid acetate finishes, the 1556 adapts to your face size and personal style without compromise.
Flexible Hinge Technology for All-Day Comfort
Sferoflex frames are built around a patented flexible hinge system that's been refined since 1941. A spring mechanism inside each temple allows the arms to flex outward and adapt to the size and shape of your face, eliminating the pressure points and temple squeeze common in rigid frames. The result is a secure, non-slip fit that feels custom-made, even after hours of continuous wear. This flex-temple design is particularly valuable if you've struggled to find glasses that don't pinch or slide—the 1556 conforms to you, not the other way around.
Acetate Construction: Lightweight, Durable, Hypoallergenic
The frame is constructed from cellulose acetate, a plant-based material formed by layering and fusing sheets of cellulose. Acetate offers several advantages over conventional injection-molded plastic: it's stronger and more flexible (reducing breakage), hypoallergenic (safe for sensitive skin), and capable of richer, fade-resistant color. The full-rim cat-eye shape provides excellent lens stability and a polished, put-together look that works equally well in professional settings and casual outings. The 135mm temples and 17mm bridge ensure a balanced fit across medium faces.
Prescription-Ready with Two Size Options
The Sferoflex 1556 ships with demo lenses and is fully prescription-ready—compatible with single-vision, progressive, and reading lenses. Choosing between the 51mm and 53mm lens width depends on your face size: 51mm suits small to medium faces (typically under 5'7"), while 53mm works better for medium to larger faces. Both sizes share the same 17mm bridge and 135mm temple length, so the primary difference is overall frame width and lens coverage.
Product Details
Product DetailsModel
0SF1556Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsColor Code
C593Color Description
Gradient Light Pink CyclaminFrame Color
Pink
Color Code
C555Color Description
Top Black On IceFrame Color
Black
Color Code
C592Color Description
Gradient Avio VioletFrame Color
Blue
Color Code
C591Color Description
Gradient Light BrownFrame Color
Brown
Color Code
C632Color Description
PinkFrame Color
Pink
Color Code
C555Color Description
Top Black On IceFrame Color
Black
Color Code
C591Color Description
Gradient Light BrownFrame Color
Brown
Color Code
C593Color Description
Gradient Light Pink CyclaminFrame Color
Pink
Color Code
C632Color Description
PinkFrame Color
Pink
Color Code
C631Color Description
BlueFrame Color
Blue
Color Code
C631Color Description
BlueFrame Color
Blue
Color Code
C592Color Description
Gradient Avio VioletFrame Color
Blue
Size Details
Size DetailsLens Width
51mmBridge Width
17mmTemple Length
135mmSize
5117-135
Lens Width
53mmBridge Width
17mmTemple Length
135mmSize
5317-135
Lens Width
51mmBridge Width
17mmTemple Length
135mmSize
5117-135
Lens Width
53mmBridge Width
17mmTemple Length
135mmSize
5317-135
Size
5117-135
Lens Width
51mmBridge Width
17mmTemple Length
135mmSize
5117-135
Lens Width
51mmBridge Width
17mmTemple Length
135mmSize
5117-135
Lens Width
53mmBridge Width
17mmTemple Length
135mmSize
5317-135
Size
5317-135
Size
5317-135
Size
5117-135
Lens Width
53mmBridge Width
17mmTemple Length
135mmSize
5317-135
I love these frames, but I need a 51 instead of 53. Can I exchange them? My lenses are a little too small to fit them.
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Frequently Asked Questions
Are Sferoflex 1556 eyeglasses prescription-ready?
Yes, the Sferoflex 1556 frames are fully prescription-ready and compatible with single-vision, progressive, and reading lenses. They ship with demo lenses that your optician will replace with your custom prescription. The acetate construction and full-rim design provide stable lens mounting for accurate optical alignment.
What is the difference between the 51mm and 53mm size options?
The 51mm lens width is designed for small to medium faces, while the 53mm works better for medium to larger faces. Both sizes share the same 17mm bridge and 135mm temple length, so the main difference is overall frame width. If you're under 5'7" or prefer a closer fit, the 51mm is typically the better choice.
What is Sferoflex's flexible hinge technology?
Sferoflex frames feature a patented spring hinge mechanism (invented in 1941) that allows the temples to flex outward and adapt to the size and shape of your face. This eliminates pressure points and provides a secure, comfortable fit without the pinching or temple squeeze common in rigid frames. The technology is especially helpful for all-day wear.
Are acetate frames more durable than regular plastic?
Yes, acetate frames are significantly more durable than injection-molded plastic. Acetate is made by layering and fusing sheets of plant-based cellulose, which creates a stronger, more flexible material that resists breakage. Acetate also retains color better over time and is hypoallergenic, making it a premium choice for eyewear.
Do cat-eye frames work for all face shapes?
Cat-eye frames are particularly flattering for round, oval, and heart-shaped faces because the upswept outer corners add definition and create a lifting effect. The angular shape provides contrast to softer facial features. The Sferoflex 1556's moderate cat-eye lift makes it versatile enough for both professional and casual settings.
Is Sferoflex owned by Luxottica?
Yes, Sferoflex has been part of the Luxottica Group since 1982. The frames are still manufactured in the original plant in Rovereto, Italy, where the brand was founded. Luxottica's ownership ensures consistent quality standards and access to certified optical labs for prescription lens installation.
Compare With Similar Frames
How the Sferoflex 1556 Eyeglasses stacks up against the closest alternatives we carry.
- Same Sferoflex flexible hinge comfort technology
- Similar acetate construction and durability
- Comparable price point ($61–$67)
- Identical flexible hinge technology
- Same acetate material and hypoallergenic benefits
- Very similar pricing ($61–$74)
Read the full comparison
Sferoflex 1556 vs. Similar Sferoflex Frames
If you're drawn to the Sferoflex 1556's combination of comfort technology and acetate construction but want to explore other frame shapes, the Sferoflex 1574 and Sferoflex 1548 are worth considering. All three frames share the brand's patented flexible hinge system and premium acetate construction, so the primary difference comes down to shape and styling.
The Sferoflex 1574 ($61–$67) offers a different frame silhouette while maintaining the same all-day comfort and hypoallergenic acetate material. It's a strong choice if you want Sferoflex's fit technology but prefer a shape other than cat-eye. The Sferoflex 1548 ($61–$74) sits in the same price range and delivers identical flexible temple performance, making it another solid alternative for customers who prioritize comfort over a specific frame shape.
Why choose the 1556? If you specifically want a cat-eye frame with the upswept outer corners that flatter round, oval, and heart-shaped faces, the 1556 is your best bet in the Sferoflex women's collection. The gradient and solid color options—including the distinctive pink and violet tones—give you more expressive styling than many of Sferoflex's more conservative shapes. The two size options (51mm and 53mm) also make it easier to dial in the perfect fit for your face width.
At a Glance
Sferoflex 1574 Eyeglasses
Pros:
- Same Sferoflex flexible hinge comfort technology
- Similar acetate construction and durability
- Comparable price point ($61–$67)
Cons:
- Different frame shape (not cat-eye)
- May offer fewer color/gradient options
- Different aesthetic for those specifically seeking cat-eye styling
Sferoflex 1548 Eyeglasses
Pros:
- Identical flexible hinge technology
- Same acetate material and hypoallergenic benefits
- Very similar pricing ($61–$74)
Cons:
- Different frame silhouette
- May not suit customers specifically looking for cat-eye styling
- Potentially different color palette