Sunglasses that pair a classic silhouette with robust acetate construction for everyday wear, the Yves Saint Laurent Sunglasses SL 660 aim for timeless appeal. The clean lines and unisex 54 fit bring a confident, polished finish to casual and smart outfits. Are they the subtle luxury choice worth adding to a regular rotation?
⚡ At a Glance
- • Wearing Comfort: Acetate frame with 54 sizing for a stable, comfortable unisex fit
- • Best for: Anyone wanting a branded, understated pair for regular everyday wear
- • Not ideal for: Users needing specialist sports eyewear or purpose-built performance lenses
Acetate-framed SL 660 in black-crystal-black comes in a 54 unisex size. Designer styling keeps the look versatile and suitable for daily use.
Comfortable all-day wear – with acetate frame construction
Acetate is a widely used eyewear material that can be shaped precisely and finished with a glossy surface, offering a balance of strength and lightness. The frame listed as acetate suggests a smooth finish and modest weight compared with heavier metals.
Secure, easy-to-wear frames that reduce pressure points through the day, making them practical for extended use.
Subtle designer impact – thanks to a black-crystal-black finish
The listing specifies a black-crystal-black colourway, which produces a uniform, high-gloss appearance across the frame and temples. The SL 660 name signals a recognisable designer line without overt branding.
A discreet luxury appearance that lifts an outfit while remaining versatile for both casual and smarter looks.
Versatile medium fit – with 54 sizing labelled unisex
The description notes '54 UNISEX', indicating the stated size categorisation and intended fit across genders. The 54 dimension matches common medium sizing in designer eyewear.
Suitable for a broad range of face shapes, offering a single-pair solution for mixed wardrobes and shared use.
✨ The 4 Key Reasons for Yves Saint Laurent Sunglasses SL 660
- Acetate frame – Durable lightweight material for comfortable, long daily wear
- 54mm sizing – Medium lens width suits many average adult face shapes
- Black-crystal-black finish – Glossy uniform colour keeps outfits coordinated and understated
- Unisex design – Balanced proportions allow use across male and female wardrobes
📋 Technical Details at a Glance
- Category: Sunglasses
- Brand: Yves Saint Laurent
- Model: SL 660
- Frame material: Acetate
- Colour: Black-crystal-black
❓ Frequently Asked Questions
Q: Are these sunglasses unisex?
A: Yes, the product description explicitly lists the model as '54 UNISEX'.
Q: What is the frame made from?
A: The name identifies an acetate frame, indicating acetate material is used for the construction.
Q: What does the '54' in the listing mean?
A: The listing includes '54', shown alongside 'UNISEX', indicating the stated size as 54 in the product description.
🏆 Our Verdict
Yves Saint Laurent Sunglasses SL 660 suit buyers after a polished, designer pair that works across many outfits and wears. Acetate construction, unisex 54 sizing and a classic black-crystal-black finish make these a versatile option with understated luxury. While positioned as a designer accessory, robust materials and timeless styling support long-term use.
