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001 - Black - Black
Saint Laurent SL 657 Sunglasses
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$302.34

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Saint Laurent SL 657 Sunglasses

001 - Black - Black

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    We don’t have a definitive shipping date from the manufacturer. Orders will be filled in the order they were placed. We’ll keep you updated via email once the order is placed.

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001 - Black - Black 001 - Black - Black 001 - Black - Black 001 - Black - Black 003 - Beige - Silver 003 - Beige - Silver 003 - Beige - Silver
001 - Black - Black
001 - Black - Black
001 - Black - Black
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003 - Beige - Silver
003 - Beige - Silver
003 - Beige - Silver
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ADD PRESCRIPTION
Add To Cart For Lowest Price
$302.34

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Color

001 - Black - Black
003 - Beige - Silver

*Swipe to view more color variants

  • Free Shipping
    Free Shipping
  • Price Match
    Price Match
  • Easy Returns
    Easy Returns
  • Licensed Opticians
    Licensed Opticians
DESCRIPTION RATINGS & REVIEWS PRESCRIPTION GUIDE

The Saint Laurent SL 657 Sunglasses bring bold architectural design to the classic cat-eye silhouette. Built from recycled acetate, these oversized frames feature sharp faceting across the front that catches light from every angle—a signature detail that separates them from standard cat-eye styles. The dramatic curved top line creates an exaggerated cat-eye shape that's both retro-inspired and thoroughly modern.

Designed for Impact, Built for Comfort

Saint Laurent's laser-engraved logo runs discreetly along each temple, a subtle mark of authenticity on frames that don't need to shout. The full-rim acetate construction provides durability without weight, and the 54mm lens width offers generous coverage for medium to larger faces. At 16mm, the single bridge sits comfortably without pinching, while 140mm temples ensure a secure fit that won't slide during wear.

These frames are prescription-ready, so you can add your Rx lenses and wear them as everyday eyewear or keep them as statement sunglasses. The black variant features solid black lenses, while the beige option includes silver mirror lenses for a lighter, reflective finish.

Who They're For

The oversized cat-eye shape flatters round, oval, heart-shaped, and square faces. The angular edges add definition to softer features, while the upswept corners create a lifted, elongated effect. If you're drawn to frames that make an entrance—without veering into costume territory—the SL 657 delivers that balance. Made in Italy and backed by Saint Laurent's reputation for quality, these sunglasses pair Parisian sophistication with rock-and-roll edge.

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Customer Reviews

Based on 3 reviews
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33%
(1)
L
Liah Vazana

Saint Laurent SL 657 Sunglasses

T
Tamar June
Excellent eyeglasses

Saint Laurent frames never disappoint. They're stylish and most important of all, very comfortable to wear.

K
Kristina Pellegrino

Saint Laurent SL 657 Sunglasses

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Frequently Asked Questions

Are the Saint Laurent SL 657 sunglasses prescription-ready?

Yes, the SL 657 frames are fully prescription-ready. You can add single vision, progressive, or reader lenses through our licensed opticians. The full-rim acetate construction provides a stable base for prescription lenses, and the 54mm lens width accommodates most Rx ranges.

What face shapes look best in the SL 657 cat-eye sunglasses?

The SL 657's oversized cat-eye shape is ideal for round, oval, heart-shaped, and square faces. The angular edges and upswept corners add definition to round faces, balance the proportions of heart-shaped faces, and complement the natural symmetry of oval and square face shapes.

What are the measurements of the Saint Laurent SL 657?

The SL 657 measures 54-16-140mm: 54mm lens width, 16mm bridge width, and 140mm temple length. This is considered a medium to large fit, offering generous coverage and a bold, oversized look that's characteristic of Saint Laurent's contemporary cat-eye designs.

Are these sunglasses made from sustainable materials?

Yes, the SL 657 frames are constructed from recycled acetate, part of Saint Laurent's commitment to more sustainable eyewear production. The bio-based material maintains the same durability and premium feel as traditional acetate while reducing environmental impact.

Do the SL 657 sunglasses provide UV protection?

Yes, Saint Laurent SL 657 sunglasses provide 100% UV protection, shielding your eyes from harmful UVA and UVB rays. The lenses meet international safety standards while maintaining optical clarity and the brand's signature aesthetic.

What's included with the Saint Laurent SL 657 sunglasses?

Each pair comes with authentic Saint Laurent packaging, including a branded case and cleaning cloth. All SL 657 sunglasses sold through Designer Optics are 100% authentic and include manufacturer's packaging and brand certification.

Compare With Similar Frames

How the Saint Laurent SL 657 Sunglasses stacks up against the closest alternatives we carry.

This product
Saint Laurent SL 657 Sunglasses
Saint Laurent Saint Laurent SL 657 Sunglasses $284.22
005 - Yellow - Brown
Saint Laurent Saint Laurent SL 641 Sunglasses $211.69
  • Slightly smaller fit (52mm vs 54mm lens width)
  • Bio-injection frame material for enhanced durability
  • Inspired by vintage Yves Saint Laurent glasses
View frame →
Read the full comparison

Saint Laurent SL 657 vs SL 641: Which Cat-Eye Is Right for You?

Both the SL 657 and SL 641 represent Saint Laurent's modern take on vintage cat-eye sunglasses, but they serve different style preferences and fit needs.

The SL 657 is the bolder choice. Its oversized 54mm lenses and exaggerated cat-eye shape with faceted detailing make a stronger statement. The recycled acetate construction and narrower 16mm bridge create a sleeker profile that sits closer to the face. If you want maximum drama and a frame that commands attention, the SL 657 delivers. It's also available in two distinct colorways—solid black and beige with silver mirror lenses.

The SL 641 takes a more restrained approach. With 52mm lenses and a 20mm bridge, it offers a slightly smaller, more vintage-proportioned fit. The bio-injection frame material provides excellent durability, and the design draws direct inspiration from the round-volume glasses worn by Yves Saint Laurent himself. The colored logo on the temples adds a playful detail, and the lower price point ($211-$215 vs $284-$302) makes it more accessible.

Choose the SL 657 if: You want the most dramatic cat-eye shape, prefer a narrower bridge fit, or are drawn to the faceted architectural detailing and recycled acetate construction.

Choose the SL 641 if: You prefer a slightly smaller, more vintage-inspired fit, want the durability of bio-injection material, or appreciate the heritage connection to Monsieur Saint Laurent's personal style.

At a Glance

Saint Laurent SL 641 Sunglasses

Pros:

  • Slightly smaller fit (52mm vs 54mm lens width)
  • Bio-injection frame material for enhanced durability
  • Inspired by vintage Yves Saint Laurent glasses
  • Lower price point ($211-$215)
  • Colored logo detail on temples

Cons:

  • Less dramatic cat-eye shape than the SL 657
  • Wider bridge (20mm vs 16mm) may not suit narrower noses
  • Described as 'square' shape rather than pure cat-eye
  • Fewer color options available

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