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Saint Laurent SL 181 LOULOU-001 sunglasses - Black / Grey
  • Saint Laurent SL 181 LOULOU-001 sunglasses - Black / Grey
Saint Laurent | SL 181 LOULOU

Saint Laurent | SL 181 LOULOU

£375.00
£375.00
Colour: Black / Grey
Size: 54-21-145
Will it fit you? Compare with your current glasses

Look inside the arm of your current glasses for three numbers, like 54□18-145. Enter them below.

A guide based on your current frame. Not sure? Our optometrist is happy to advise.

Transitions Gen S

Our most popular adaptive lens. Transitions Gen S darkens in sunlight and clears indoors — automatically, with no effort on your part. Available in 8 fashion colours.

IndoorsVirtually clear
OutdoorsUp to 90% dark
Fade back3–5 minutes
UV protection100% UV400
Colours8 options
Best forEveryday wear

Darkening behind a car windscreen is limited — see XTRACTIVE if you drive often.

Transitions XTRACTIVE

The performance upgrade. XTRACTIVE lenses go darker than Gen S, activate behind a car windscreen, and work in bright indoor light — ideal if you drive or are light-sensitive.

IndoorsSlight tint (comfort)
OutdoorsUp to 95% dark
DrivingActivates in car
UV protection100% UV400
ColoursGrey, Green, Brown
Best forDrivers & outdoors

Has a very slight tint indoors — this is normal and provides extra comfort in bright environments.

Customise your sunglasses

Choose an option to continue

MAR Anti-Reflection

A multi-layer coating that eliminates surface reflections from your lenses. Light passes through cleanly instead of bouncing back as glare — making your vision sharper and your lenses almost invisible to others.

WITHOUT MAR WITH MAR COATING ✗ Glare · Reflections ✓ Clear · Reflection-free
Night drivingCuts oncoming headlight glare
ScreensReduces monitor reflections
AppearanceLenses look nearly invisible
PhotosNo flash reflections in eyes
ClarityUp to 99% light transmission
IncludesScratch & smudge resistance

Recommended for almost everyone. If you wear your glasses full time, MAR is the single biggest upgrade you can make to your lenses.

Blue Filter Coating

Selectively filters high-energy blue-violet light (380–480nm) emitted by screens, LED lighting and the sun. This is the wavelength range most associated with digital eye strain and disrupted sleep.

LIGHT ENTERING YOUR EYES FILTERED OUT PASSES THROUGH 380–480nm · HEV blue light Linked to strain & sleep disruption Strain → Comfortable
Screen timeReduces fatigue from phones & monitors
SleepLess blue light in evenings
SensitivityHelps light-sensitive eyes
LED lightingFilters harsh artificial light
IncludesMAR anti-reflection layer
Best forOffice & heavy screen users

The Blue Filter coating includes a built-in anti-reflection layer, so you get the benefits of both coatings in one. Lenses have a very slight yellow-green tint which is normal and expected.

Varifocal Lenses

We want to make sure your varifocals are absolutely right for you. Accurate measurements are essential — a tiny error can make varifocals unwearable.

For that reason, we'd love to see you in person or speak with you directly before ordering varifocal lenses.

📧 sales@theeyecentre.com
📍 The Eye Centre, 56 High Street, Leicester, LE1 5YN

Sunglasses as Shown — Please Confirm

You'll receive these sunglasses complete with their original tinted lenses, exactly as displayed in the product photos.

No glazing or prescription fitting is included. If you'd like prescription or clear lenses fitted, please go back and choose another option.

👓

Prescription Outside Our Range

We're sorry — your prescription is outside the range we can currently dispense online.

📧 sales@theeyecentre.com
📍 The Eye Centre, 56 High Street, Leicester, LE1 5YN

Bold geometric lines, crafted in acetate Confident style for the modern woman

The Saint Laurent SL 181 LOULOU sunglasses bring confident, modern sophistication to your everyday look. Crafted from acetate, these geometric frames offer a striking yet flattering silhouette designed for women who appreciate understated polish. Sized at 54-21-145, they are an investment piece that effortlessly elevates any wardrobe, from city days to sunlit getaways.

Frame colour
black / grey — durable, lightweight, and refined
Geometric shape
Distinctive silhouette designed to flatter and define
Best for face shape
Oval-Round

Frame dimensions

Glasses frame dimensions Lens width 54mm, bridge 21mm, temple 145mm 54mm lens width 21 bridge 54mm lens width 145mm temple

Specifications

ColourBlack / Grey
Best forOval-Round
Frame materialAcetate
ShapeGeometric
Lens width54mm
FitStandard Fit
GenderWomen
Best forOval-Round
Expert Optical Glazing
When ordered with a prescription, your lenses are manufactured and glazed by our specialist optical lab to your exact requirements — verified by our GOC-registered optometrist before dispatch.
Ordering with a prescription?
We review every prescription before manufacturing begins. If we have any questions we will contact you directly. Not sure which lenses to choose? Get in touch and we will guide you.

Same fit, different look

Fits like your SL 181 LOULOU

54 lens 21 bridge 145 arm
Exact fitGucci | GG2127SK

Gucci

GG2127SK

£310

54-21-145

Same lens and bridge as the SL 181 LOULOU — a different look that fits the same.
Exact fitTom Ford | FT1082 (KAYA)

Tom Ford

FT1082 (KAYA)

£400

54-21-140
±1mmGucci | GG0811S

Gucci

GG0811S

£320

53-21-145

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