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The Saint Laurent SL M139 Eyeglasses bring bold architectural style to prescription eyewear. These wide square frames are built from premium acetate in a full-rim construction that balances presence with a surprisingly refined profile. The frame's clean lines and generous 54mm lens width create a modern statement without feeling oversized, while the 18mm bridge and 145mm temples deliver a secure, balanced fit.
What sets the SL M139 apart is the attention to detail. Look closely at the hinges and you'll spot Saint Laurent's signature monogram—a subtle luxury touch that confirms authenticity. The acetate construction isn't just about looks; it's a plant-based material that's more durable and flexible than standard injection-molded plastic, so these frames resist breakage and hold their shape through daily wear. The transparent finish options (black, havana, and beige) show off the material's depth and quality in a way cheaper plastics can't match.
These frames are fully prescription-ready, compatible with single-vision, progressive, and high-index lenses. The 45.1mm lens height provides enough vertical space for progressive prescriptions, and the full-rim design securely holds lenses of varying thicknesses. Whether you're updating your everyday frames or investing in a pair that works from the office to dinner, the SL M139 delivers the kind of understated confidence Saint Laurent is known for. Includes case, lens cloth, and manufacturer's guarantee.
Product Details
Product DetailsModel
SL M139Shape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsColor Code
001Color Description
BlackFrame Color
BlackLens Color
TransparentLens Features
Ar (anti Reflective)
Color Code
002Color Description
HavanaFrame Color
TortoiseLens Color
TransparentLens Features
Ar (anti Reflective)
Color Code
005Color Description
BeigeFrame Color
BeigeLens Color
TransparentLens Features
Ar (anti Reflective)
Color Code
003Color Description
HavanaFrame Color
TortoiseLens Color
TransparentLens Features
Ar (anti Reflective)
Color Code
006Color Description
BurgundyFrame Color
BurgundyLens Color
TransparentLens Features
Ar (anti Reflective)
Color Code
011Color Description
BlackFrame Color
BlackLens Color
Transparent
Color Code
014Color Description
HavanaFrame Color
TortoiseLens Color
Transparent
Color Code
012Color Description
HavanaFrame Color
TortoiseLens Color
Transparent
Color Code
010Color Description
HavanaFrame Color
TortoiseLens Color
Transparent
Color Code
013Color Description
BrownFrame Color
BrownLens Color
Transparent
Color Code
008Color Description
BurgundyFrame Color
BurgundyLens Color
TransparentLens Features
Ar (anti Reflective)
Color Code
007Color Description
BeigeFrame Color
BeigeLens Color
TransparentLens Features
Ar (anti Reflective)
Color Code
009Color Description
BrownFrame Color
BrownLens Color
Transparent
Size Details
Size DetailsBridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
145.00Size
5618-145
Bridge Width
18.00Temple Length
145.00Size
5618-145
Bridge Width
18.00Temple Length
145.00Size
5618-145
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
145.00Size
5618-145
Bridge Width
18.00Temple Length
145.00Size
5618-145
Bridge Width
18.00Temple Length
145.00Size
5618-145
Bridge Width
18.00Temple Length
145.00Size
5418-145
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Frequently Asked Questions
Are the Saint Laurent SL M139 eyeglasses prescription-ready?
Yes, the SL M139 frames are fully prescription-ready and compatible with single-vision, progressive, bifocal, and high-index lenses. The 45.1mm lens height provides sufficient vertical space for progressive lenses. You can add your prescription during checkout, and our licensed opticians will custom-fit your lenses to these frames.
What size are the Saint Laurent SL M139 frames?
The SL M139 measures 54mm lens width, 18mm bridge width, and 145mm temple length (54-18-145), with a 45.1mm lens height. This is considered a large fit. The wide square shape works well for medium to wider faces and provides excellent coverage.
What is the monogram hinge on the SL M139?
The SL M139 features Saint Laurent's signature monogram logo on the hinge hardware on both sides of the frame. This small luxury detail is a hallmark of authentic Saint Laurent eyewear and adds a refined touch to the overall design.
Are these frames made from real acetate or plastic?
The SL M139 is constructed from 100% cellulose acetate, a premium plant-based material that's more durable, flexible, and hypoallergenic than standard petroleum-based plastic. Acetate frames are lightweight, retain their color better over time, and are less prone to breakage than injection-molded plastic frames.
Can I use my FSA or HSA to purchase these eyeglasses?
Yes, prescription eyeglasses including the Saint Laurent SL M139 are FSA and HSA eligible. You can use your flexible spending account or health savings account funds to purchase the frames and prescription lenses, as they qualify as a medical expense for vision correction.
Where are Saint Laurent eyeglasses manufactured?
Saint Laurent eyeglasses are manufactured by Kering Eyewear in Padova, Italy. The frames are produced using a combination of traditional Italian craftsmanship and modern manufacturing techniques to ensure quality and durability.
Compare With Similar Frames
How the Saint Laurent SL M139 Eyeglasses stacks up against the closest alternatives we carry.
- Slightly smaller 53mm lens width for narrower faces
- Rectangular shape is more conservative than the M139's wider square
- Also features monogram branding
- Similar price point ($230-$232)
- Same premium acetate construction
- Alternative frame shape for different face types
Read the full comparison
Saint Laurent SL M139 vs. SL M33/F: Which Square Frame Is Right for You?
Both the SL M139 and SL M33/F are premium acetate square frames from Saint Laurent's Monogram collection, but they serve different style preferences. The M139 features a wider, more dramatic square shape with 54mm lenses and an 18mm bridge—it's the bolder choice that makes a statement. The M33/F offers a slightly smaller 53mm lens width with a 15mm bridge, creating a more rectangular, conservative profile that works particularly well for narrower faces.
If you want maximum presence and a fashion-forward look, the M139's wide square shape delivers. It's ideal for medium to wider faces and those who want their eyewear to be a focal point. The M33/F is the better pick if you prefer understated sophistication or have a narrower face—it maintains Saint Laurent's luxury aesthetic in a more subtle package. Both feature the signature monogram hinge detail and the same high-quality Italian-made acetate construction.
Comparing the SL M139 to the SL M142/F
The SL M142/F sits at a nearly identical price point to the M139 ($230-$232) and shares the same premium acetate construction, but offers a different frame shape. While the M139 is definitively square with wide proportions, the M142/F provides an alternative silhouette for those exploring Saint Laurent's prescription eyewear range. If the square shape of the M139 is exactly what you're after, it's the clear choice. If you're still deciding on frame shape, comparing both models can help you find your perfect Saint Laurent fit.
At a Glance
Saint Laurent Monogram SL M33/F Eyeglasses
Pros:
- Slightly smaller 53mm lens width for narrower faces
- Rectangular shape is more conservative than the M139's wider square
- Also features monogram branding
- Lower bridge fit option available (15mm vs 18mm)
Cons:
- Less dramatic presence than the M139's wider square shape
- Smaller lens height (not specified but typically less than 45mm)
- May not suit those wanting a bold statement frame
Saint Laurent SL M142/F Eyeglasses
Pros:
- Similar price point ($230-$232)
- Same premium acetate construction
- Alternative frame shape for different face types
- Part of the same Saint Laurent collection
Cons:
- Different frame shape may not suit those specifically seeking square frames
- Less information available about specific measurements
- May have different fit characteristics