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003 - Havana - Green
Saint Laurent Classic SL 51 Sunglasses
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$314.77

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Saint Laurent Classic SL 51 Sunglasses

002 - Black - Grey / 50

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003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 003 - Havana - Green 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey 002 - Black - Grey Saint Laurent Classic SL 51 Sunglasses Saint Laurent Classic SL 51 Sunglasses Saint Laurent Classic SL 51 Sunglasses Saint Laurent Classic SL 51 Sunglasses Saint Laurent Classic SL 51 Sunglasses 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 001 - Black - Grey 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 004 - Havana - Brown 043 - Black - Black 043 - Black - Black
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
003 - Havana - Green
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
002 - Black - Grey
Saint Laurent Classic SL 51 Sunglasses
Saint Laurent Classic SL 51 Sunglasses
Saint Laurent Classic SL 51 Sunglasses
Saint Laurent Classic SL 51 Sunglasses
Saint Laurent Classic SL 51 Sunglasses
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
001 - Black - Grey
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
004 - Havana - Brown
043 - Black - Black
043 - Black - Black
  • Free Shipping
    Free Shipping
  • Price Match
    Price Match
  • Easy Returns
    Easy Returns
  • Licensed Opticians
    Licensed Opticians
ADD PRESCRIPTION
Add To Cart For Lowest Price
$314.77

You save 0%

Color

Size

002 - Black - Grey / 50

*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 Classic SL 51 sunglasses bring refined French luxury to an everyday square frame. Part of the brand's permanent collection, these unisex sunglasses feature a soft rectangular shape in acetate that works across face shapes and styles. The 50mm lens width and 22mm bridge deliver a medium fit that sits comfortably without feeling oversized, while the 140mm temples provide a secure, balanced feel.

Premium Acetate Construction

Each frame is made from premium acetate, a plant-based material known for its lightweight feel and durability. The rich havana tortoise finish shows depth and warmth you won't find in injection-molded plastic. Saint Laurent engraves its logo tone-on-tone on the outer temples—a subtle mark of authenticity. The full-rim design and saddle bridge redistribute weight toward the sides of the nose, reducing pressure during all-day wear. Barrel hinges adjust easily and hold up over time.

Prescription-Ready & UV Protection

The SL 51 is fully prescription-ready. The full-rim acetate construction and standard lens shape accommodate single vision, progressive, and bifocal lenses. You can add polarized, photochromic, or high-index options to match your vision needs. The lenses provide 100% UVA/UVB protection.

Who It's For

This is a versatile, go-anywhere frame. The square silhouette leans classic without feeling dated, and the medium proportions work for most face widths. It's a strong choice if you want a luxury frame that doesn't shout but still carries Saint Laurent's design DNA. Pair it with prescription sun lenses for driving and travel, or keep it as your daily pair. Made in Italy and backed by Saint Laurent's reputation for quality, the SL 51 is built to last.

Product DetailsProduct Details

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Customer Reviews

Based on 3 reviews
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B
B Howlett
Saint Laurent Sunglasses

My glasses came next day just in time for my trip to San Diego. They are perfect love them!! Isn’t my first order with you guys and it sure won’t be the last!!!

J
J
Product arrived quickly exactly as ordered. A+

Product arrived quickly exactly as ordered. A+

E
Emma

Great sunglasses

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Frequently Asked Questions

Are the Saint Laurent SL 51 sunglasses prescription-ready?

Yes, the SL 51 sunglasses are fully prescription-ready. The full-rim acetate construction and standard lens shape make them compatible with single vision, progressive, and bifocal prescription lenses. You can customize them with polarized, photochromic, or high-index lenses to suit your vision needs.

What are the measurements of the Saint Laurent SL 51?

The Saint Laurent SL 51 measures 50mm lens width, 22mm bridge width, and 140mm temple length (50-22-140). This is considered a medium fit that works well for most face sizes. The 50mm lens provides good coverage without being oversized, and the 22mm bridge sits comfortably on most nose widths.

What face shapes work best with the SL 51 square frames?

Square sunglasses like the SL 51 look best on round, oval, heart-shaped, and diamond face shapes. The angular frame and structured corners add definition to softer features, balancing curved cheekbones and rounded jawlines. Round faces gain the strongest contrast from the geometric silhouette.

Do Saint Laurent SL 51 sunglasses provide UV protection?

Yes, the Saint Laurent SL 51 sunglasses provide 100% UVA/UVB protection to shield your eyes from harmful ultraviolet rays. As a premium designer eyewear product, these frames meet standard UV protection requirements. When ordering with prescription lenses, you can also add protective coatings like anti-reflective or blue light filtering.

How should I care for my Saint Laurent acetate sunglasses?

Clean your acetate frames with lukewarm water and mild soap, then dry with a soft microfiber cloth—never paper towels, which can scratch. Avoid alcohol-based products, acetone, and harsh solvents that can strip the acetate finish. Always store your sunglasses in their case when not in use, and avoid leaving them in direct sunlight or heat, which can warp acetate frames.

What's included with Saint Laurent SL 51 sunglasses?

Saint Laurent sunglasses come with all official accessories, including a Saint Laurent protective case and cleaning cloth. The frames are made in Italy and are 100% authentic, featuring the Saint Laurent logo engraved tone-on-tone on the outer temples as a mark of authenticity.

Compare With Similar Frames

How the Saint Laurent Classic SL 51 Sunglasses stacks up against the closest alternatives we carry.

This product
Saint Laurent Classic SL 51 Sunglasses
Saint Laurent Saint Laurent Classic SL 51 Sunglasses $306.82
001 - Black - Black
Saint Laurent Saint Laurent Classic SL 318 Sunglasses $186.78
  • Larger 56mm lens width provides more coverage for bigger faces
  • Lower price point ($186.78–$233.18 vs $306.82–$314.77)
  • Part of Saint Laurent's accessible 'Signature' line with maximum flexibility and lightness
View frame →
Read the full comparison

Saint Laurent SL 51 vs SL 318: Which Classic Square Frame Is Right for You?

Both the SL 51 and SL 318 are square acetate sunglasses from Saint Laurent's classic collection, but they serve different needs. The choice comes down to fit, refinement, and budget.

Size & Fit

The SL 51 measures 50-22-140mm—a medium fit that works for most face sizes without feeling oversized. The SL 318 is noticeably larger at 56-17-145mm, with a wider lens and longer temples designed for bigger faces and those who prefer more coverage. If you have a smaller or medium face, the SL 51 will feel more balanced. If you need a larger frame or want maximum coverage, the SL 318 delivers.

Design & Construction

The SL 51 is part of Saint Laurent's permanent collection, featuring handcrafted acetate with tone-on-tone temple engraving and a saddle bridge for comfort. It's a refined, detail-oriented frame. The SL 318 belongs to the brand's accessible 'Signature' line, built with injection-molded acetate for maximum flexibility and lightness. Both are well-made, but the SL 51 has a more premium feel and finish.

Price

The SL 318 starts at $186.78, making it a more budget-friendly entry into Saint Laurent eyewear. The SL 51 starts at $306.82, reflecting its permanent collection status and handcrafted construction. If you're looking for the best value in a Saint Laurent square frame, the SL 318 is hard to beat. If you want the refinement and longevity of a permanent collection piece, the SL 51 is worth the investment.

Our Take

Choose the SL 51 if you want a medium-fit, handcrafted frame with refined detailing and a saddle bridge for all-day comfort. It's the better choice for smaller to medium faces and those who prioritize craftsmanship. Choose the SL 318 if you need a larger fit, want more coverage, or are looking for an accessible price point without sacrificing Saint Laurent's design DNA. Both are prescription-ready and offer 100% UV protection.

At a Glance

Saint Laurent Classic SL 318 Sunglasses

Pros:

  • Larger 56mm lens width provides more coverage for bigger faces
  • Lower price point ($186.78–$233.18 vs $306.82–$314.77)
  • Part of Saint Laurent's accessible 'Signature' line with maximum flexibility and lightness
  • Longer 145mm temples for larger head sizes

Cons:

  • Larger proportions may overwhelm smaller faces
  • Less refined detailing compared to the permanent SL 51 collection
  • Wider bridge (17mm vs 22mm) may not fit all nose widths as comfortably

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