Product Details
Color Details
Size DetailsFrequently Asked Questions
Are the Saint Laurent SL M139 eyeglasses prescription-ready?
What size are the Saint Laurent SL M139 frames?
What is the monogram hinge on the SL M139?
Are these frames made from real acetate or plastic?
Can I use my FSA or HSA to purchase these eyeglasses?
Where are Saint Laurent eyeglasses manufactured?
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