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The Saint Laurent SL M128 Eyeglasses bring Parisian sophistication to everyday eyewear with a modern cat-eye silhouette that flatters without overwhelming. Part of the brand's Monogram collection, these prescription-ready frames feature a refined shape that draws the eye upward—ideal for round and oval faces looking for added definition.
Recycled Acetate Construction
Built from recycled acetate in transparent brown, black, and nude finishes, the SL M128 uses thin-section construction on both the front and temples. The result is a frame that feels lighter than it looks, comfortable enough for all-day wear. The full-rim design provides stability for prescription lenses while the 53mm and 56mm lens widths (16mm bridge, 145mm temples) suit a range of face sizes.
The iconic YSL signature is integrated into the hinge—a subtle detail that sets these apart from generic cat-eyes. It's the kind of finishing touch you notice up close, a nod to the brand's heritage without shouting about it.
Who They're For
These work best if you want a cat-eye that leans modern rather than vintage. The angular corners add structure to softer features, and the transparent acetate options (especially the warm brown tones in the photos) offer versatility—they pair as easily with casual knits as they do with tailored blazers. Available in six color and size combinations, the SL M128 is prescription-ready and ships with anti-reflective demo lenses that can be replaced with your Rx.
Saint Laurent eyewear is made in Italy under Kering Eyewear, and the quality shows: smooth hinges, even acetate finishing, and a build that should hold up to daily use. At this price point, you're paying for the design and the name, but also for frames that won't feel flimsy after a few months.
Product Details
Model
SL M128Shape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Frame Color
BrownColor Code
010Color Description
BrownLens Color
TransparentLens Features
Ar (anti Reflective)
Frame Color
BlackColor Code
001Color Description
BlackLens Color
TransparentLens Features
Ar (anti Reflective)
Frame Color
PearColor Code
011Color Description
NudeLens Color
TransparentLens Features
Ar (anti Reflective)
Frame Color
BrownColor Code
012Color Description
BrownLens Color
TransparentLens Features
Ar (anti Reflective)
Frame Color
BlackColor Code
005Color Description
BlackLens Color
TransparentLens Features
Ar (anti Reflective)
Frame Color
PearColor Code
009Color Description
NudeLens Color
TransparentLens Features
Ar (anti Reflective)
Size Details
Bridge Width
16.00Temple Length
145.00Size
5316-145
Bridge Width
16.00Temple Length
145.00Size
5316-145
Bridge Width
16.00Temple Length
145.00Size
5616-145
Bridge Width
16.00Temple Length
145.00Size
5616-145
Bridge Width
16.00Temple Length
145.00Size
5616-145
Bridge Width
16.00Temple Length
145.00Size
5316-145
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Frequently Asked Questions
Are Saint Laurent SL M128 eyeglasses prescription-ready?
Yes, the SL M128 frames are fully prescription-ready and can accommodate single-vision, progressive, and other custom lens options. The full-rim acetate construction provides excellent stability for prescription lenses, and the frame is compatible with anti-reflective coatings, blue light filtering, and other lens treatments.
What face shapes work best with cat-eye frames like the SL M128?
Cat-eye glasses are particularly flattering on round and oval face shapes. The upswept corners and angular edges add definition to softer features and create visual length. Heart-shaped faces can also wear cat-eyes well when the frame width balances a narrower chin. The SL M128's moderate cat-eye shape is versatile enough for most face types.
What does recycled acetate mean for eyeglass frames?
Recycled acetate is made from post-industrial waste materials rather than virgin petroleum-based plastics, reducing environmental impact and carbon footprint. The SL M128 uses recycled acetate for both the front frame and temples, which maintains the same durability and color depth as traditional acetate while supporting more sustainable manufacturing practices.
What sizes are available for the Saint Laurent SL M128?
The SL M128 is available in two lens widths: 53mm and 56mm, both with a 16mm bridge and 145mm temple length. The 53mm size works well for small to medium faces, while the 56mm offers more coverage for medium to larger faces. The total frame width is approximately 126mm.
What is the YSL signature hinge detail on the SL M128?
The SL M128 features the iconic YSL (Yves Saint Laurent) logo integrated directly into the hinge mechanism on the temples. This design element serves both aesthetic and functional purposes, reinforcing the brand's heritage while providing a distinctive detail that sets these frames apart from standard cat-eye styles.
Are Saint Laurent eyeglasses good quality?
Saint Laurent eyewear is manufactured in Italy by Kering Eyewear and is known for premium construction quality. Reviews consistently mention top-quality frames and lenses, durable acetate materials, smooth hinge operation, and Italian craftsmanship. The brand uses high-quality acetate and metal components that are built to last with proper care.
Compare With Similar Frames
How the Saint Laurent SL M128 Eyeglasses stacks up against the closest alternatives we carry.
- Similar Monogram collection quality and YSL branding details
- Comparable price range ($239-$259)
- Same Italian craftsmanship and recycled acetate construction
- Lower price point ($203-$210) while maintaining Saint Laurent quality
- Classic collection offers timeless styling
- Full-rim acetate construction similar to SL M128
Read the full comparison
Saint Laurent SL M128 vs. Similar Frames
If you're considering the Saint Laurent SL M128, you might also be weighing other Saint Laurent optical frames in a similar style and price range. Here's how the SL M128 compares to two other popular options in our collection.
SL M128 vs. Saint Laurent Monogram SL M97
Both frames belong to Saint Laurent's Monogram collection, which means they share the same design DNA: recycled acetate construction, thin-section frames for reduced weight, and the signature YSL hinge detail. The SL M97 offers a different frame shape—less cat-eye, more squared or rectangular depending on the variant—making it a better choice if you want Monogram collection quality but prefer a less angular look. Pricing is nearly identical ($239-$259 for the M97 vs. $230-$237 for the M128), so the decision comes down to frame shape preference and which silhouette better suits your face. If you have a rounder face and want added definition, the M128's cat-eye wins. If you prefer a more neutral, unisex shape, explore the M97.
SL M128 vs. Saint Laurent Classic SL 259
The SL 259 sits in Saint Laurent's Classic collection at a lower price point ($203-$210), making it an appealing option if you're budget-conscious but still want the Saint Laurent name and Italian quality. The trade-off: you lose the Monogram collection's signature YSL hinge integration and the ultra-lightweight thin-section construction. The SL 259 is still a well-made full-rim acetate frame and is equally prescription-ready, but it doesn't carry the same design cachet as the Monogram line. If the YSL hinge detail and lighter weight matter to you, the SL M128 justifies the extra $30-40. If you simply want a solid Saint Laurent frame and don't need the Monogram branding, the SL 259 delivers excellent value.
Bottom line: The SL M128 occupies a sweet spot—Monogram collection prestige, cat-eye versatility, and a price that's competitive within the Saint Laurent optical range. It's the right choice if you want a modern cat-eye with recognizable (but subtle) branding and a frame that won't feel heavy after a full day of wear.
At a Glance
Saint Laurent Monogram SL M97 Eyeglasses
Pros:
- Similar Monogram collection quality and YSL branding details
- Comparable price range ($239-$259)
- Same Italian craftsmanship and recycled acetate construction
- Alternative frame shape for different face types
Cons:
- Different frame shape may not suit those specifically seeking cat-eye style
- May have different size availability
- Less angular definition compared to the SL M128's cat-eye silhouette
Saint Laurent Classic SL 259 Eyeglasses
Pros:
- Lower price point ($203-$210) while maintaining Saint Laurent quality
- Classic collection offers timeless styling
- Full-rim acetate construction similar to SL M128
- Prescription-ready with same lens compatibility
Cons:
- Lacks the Monogram collection's YSL hinge detail
- Different frame shape and aesthetic
- May not have the same lightweight thin-section construction
- Classic collection vs. Monogram collection positioning



