Collection: Persol Square Sunglasses

Persol square sunglasses gather the boldest, most architectural frames in the Persol catalogue, bringing together the clean lines and confident proportions that have made the square silhouette a perennial favourite among British style enthusiasts. Every pair here is a genuine, authentic Persol, supplied by Ardor Eyewear as an authorised UK stockist, with free UK delivery and the option to add prescription lenses to almost any frame. Whether you are drawn to the softened squares of the celebrated PO3019S, the sharper geometry of the PO3348S, or contemporary references such as the PO3292S, PO3375S, PO3355S and PO3199S, this is where Italian craftsmanship meets one of the most flattering, versatile shapes in sunglasses. Prices in the collection typically run from around £115 to £295.

Why choose Persol square sunglasses?

Persol is Italy's oldest sunglasses house, founded in Turin in 1917, and its name — from "per il sole", meaning "for the sun" — tells you everything about its purpose. What makes Persol square sunglasses special is the marriage of that heritage with a shape that suits so many faces. A square frame adds structure and a hint of authority, framing the eyes with clean horizontal lines that read as timeless rather than trend-led. On Persol, those lines are executed with hand-finished acetate, the patented Meflecto sprung temple system for all-day comfort, and the unmistakable silver arrow — the Freccia — riveted to the sides. The result is a sunglasses that feels considered in the hand and looks quietly expensive on the face.

These are frames for people who appreciate detail. The Meflecto system flexes to the shape of your head, easing pressure on the temples during long wear, while the crystal or premium mineral lenses deliver the crisp, faithful vision Persol is known for. If you want designer sunglasses that perform as beautifully as they look, the square silhouette from this house is a genuinely rewarding place to start.

Iconic Persol square models

The collection spans the house's most respected square references, each with its own character:

• PO3019S — a softened, rounded-square shape beloved for its easy wearability; the corners are gently curved, so it flatters a wide range of faces while keeping a strong presence.
• PO3348S — a sharper, more assertive square with cleaner angles for those who want a bolder statement.
• PO3292S and PO3199S — contemporary interpretations that balance the classic square front with modern proportions and detailing.
• PO3375S and PO3355S — refined options that show Persol's ability to keep the square shape fresh without losing its heritage.

Square frames are one of the most versatile shapes in the store, and if you would like to see the silhouette across other brands, our wider square sunglasses collection is worth exploring. To view the full breadth of the house, visit our Persol sunglasses hub.

How to choose the right square frame for your face

The square is a confident shape, and choosing the right version for your face makes all the difference between striking and overpowering.

Face shape guidance

• Round faces are the classic match for a square frame — the angular lines add definition and structure that a round face lacks on its own.
• Oval faces carry squares effortlessly, so choose based on the size and boldness you prefer.
• Square or strong-jawed faces are best served by the softened squares, such as the PO3019S, whose rounded corners take the edge off matching angles.
• Heart-shaped faces suit a square that is not too wide at the top, keeping the balance towards the lower half of the face.

Getting the fit right

Persol prints its measurements — lens width, bridge width and temple length — inside the temple arm. Compare these with a pair you already wear happily, and look for a frame that sits level, keeps the lenses clear of your cheeks, and rests comfortably thanks to the Meflecto temples. Because a square frame has a strong horizontal line, getting the width right matters: it should finish at roughly the edges of your face rather than extending well beyond.

Craftsmanship, materials and the Meflecto system

Persol's reputation rests on how its frames are made. The acetate is cut and hand-polished for depth of colour and a smooth finish, most famously in the warm Havana tortoiseshell the brand helped popularise, as well as classic black and richer tones. The signature Meflecto temples contain flexible metal cores that spring gently against the head, distributing pressure for comfort across a long day — a genuine engineering feature rather than mere decoration. The silver Freccia arrow, originally a functional hinge design, has become the house's calling card. Many square models are fitted with Persol's high-quality crystal lenses, prized for their clarity and scratch resistance, and all lenses provide 100% UVA and UVB protection.

Prescription and polarised options

Most Persol square frames can be glazed to your prescription, so you never have to choose between iconic design and clear vision. We offer single-vision, varifocal, bifocal and tinted prescription lenses, and polarised lenses are available on many models to cut glare from roads and water. Prescription glazing takes approximately seven to ten working days before dispatch. If glare reduction is your priority, our polarised sunglasses collection explains the benefits, and to explore prescription sun options in full, see our prescription sunglasses range.

Styling Persol square sunglasses

The square shape sits at the smart end of casual, which makes it endlessly useful. A Havana square brings warmth and heritage to tailoring, linen and knitwear; a black square keeps things sharp and modern with denim or monochrome dressing. Persol's understated luxury means these frames flatter without shouting, which is exactly why they have such an enduring following among people who dress with intent. For men building a designer rotation, browse the wider men's sunglasses collection, and for a broader look across luxury houses, our designer sunglasses edit places Persol in context.

Why buy from Ardor Eyewear

Authenticity is the foundation of every purchase here. As an authorised UK stockist, every pair of Persol square sunglasses we sell is 100% genuine, supplied through official channels and delivered with its branded case, cloth and paperwork. You get free UK shipping on every order, a 14-day returns window if a frame is not right (return postage paid by the customer), and honest, knowledgeable guidance without invented discounts or inflated claims. It is a trustworthy, straightforward way to buy heritage Italian eyewear in Britain.

Caring for your Persol sunglasses

The Meflecto temple system deserves a special mention when it comes to care. Because the arms are designed to flex, they should be allowed to do so naturally rather than being forced or bent to adjust the fit; if a frame feels too tight or too loose, an optician can adjust it correctly at the temple and nose. Avoid perching the glasses on top of your head, which stretches the sprung temples over time, and resist the temptation to hang them from a shirt collar where they can slip and fall. Kept in their case between wears and handled with both hands, a pair of Persol squares will retain the precise, comfortable fit that makes them such a pleasure to own.

Persol frames reward good care. Rinse the lenses under cool water before wiping to lift away grit, then dry with the microfibre cloth supplied rather than a shirt or tissue. Avoid leaving them in a hot car, as heat can affect the acetate and the sprung temples over time. Store them in their case when not in use to protect the lenses and the arrow detailing, and handle them with both hands to keep the Meflecto temples aligned. With minimal effort, a pair of Persol squares will stay beautiful for many years.

Colours, lenses and finishes in the Persol square sunglasses range

Part of the pleasure of choosing Persol square sunglasses is the depth of colour and lens options on offer. The house's warm Havana tortoiseshell is its most celebrated finish — a rich, translucent brown that shifts subtly in the light and pairs beautifully with earthy, tailored wardrobes. Classic black acetate is the most versatile and understated choice, while deeper tones such as bottle green and smoke offer something a little different without straying from Persol's refined character. Lens choices matter just as much as frame colour: the house's crystal green lens gives natural, faithful colour and is the traditional Persol signature, brown and copper tints lift contrast for driving, and darker greys suit very bright sun. Polarised and gradient options are available on many models, so you can match the lens precisely to how and where you wear the glasses. For a first pair, a Havana or black frame with a green or brown lens is the most timeless combination.

Everyday wear and long-term value of Persol square sunglasses

A pair of Persol square sunglasses is built to be worn and kept rather than replaced each season. The hand-finished acetate, sprung Meflecto temples and crystal lenses are made to last, and the classic square shape is rooted in the house's heritage rather than passing trends, so it never looks dated. Because the frames are so well made, they can be re-glazed if a lens is scratched or your prescription changes, extending the life of the piece for many years. That durability is a large part of the value: while the initial outlay is higher than a disposable pair, the cost over the life of the frame is very reasonable, and you enjoy genuine Italian craftsmanship every time you put them on. Buying once, and buying authentic, is almost always the better decision. Many Persol owners find that a single square frame becomes a long-term companion, worn across countless summers and journeys, and that lasting relationship with a well-made object is a quiet pleasure in itself.

Persol square sunglasses for driving and travel

The square shape and Persol's optical quality make this collection an excellent companion for driving and travel. A polarised or high-contrast brown lens cuts the glare that bounces off the road and other vehicles, easing eye strain on long journeys, while the Meflecto temples keep the frames comfortable for hours behind the wheel. For travel, the substantial acetate frames feel reassuringly durable in a bag, and the supplied hard case protects them in transit. If you spend a lot of time driving, pairing a square frame with a polarised lens is one of the most practical upgrades you can make, combining the shape's timeless looks with genuinely useful glare control for the road ahead.

Frequently asked questions

Are Persol square sunglasses at Ardor genuine?

Yes. We are an authorised UK stockist and every pair is 100% authentic, supplied through official Persol channels and delivered with its branded case, cleaning cloth and documentation.

What is the Meflecto system?

Meflecto is Persol's patented sprung temple design, containing flexible metal cores that gently flex against the head. It distributes pressure evenly for comfortable, secure all-day wear.

Which face shape suits square sunglasses best?

Square frames are especially flattering on round and oval faces, where the angular lines add welcome structure. If you have a squarer face, choose a softened square such as the PO3019S.

Can I get Persol square sunglasses with my prescription?

Most frames can be glazed with single-vision, varifocal, bifocal or tinted prescription lenses, and polarised prescription lenses are available on many models. Glazing usually takes around seven to ten working days before dispatch.

Are polarised lenses available?

Yes, many Persol square models are available with polarised lenses, which cut glare from reflective surfaces such as roads and water for calmer, clearer vision.

What does a pair cost?

Frames in this collection typically range from around £115 to £295, depending on the model, lens type and materials.

Do the lenses offer UV protection?

Every pair provides 100% UVA and UVB protection as standard, shielding your eyes from harmful ultraviolet light in all conditions.

What are your delivery and returns terms?

We offer free UK shipping on all orders. Non-prescription pairs are dispatched promptly, while prescription orders take around seven to ten working days for glazing. Returns are accepted within 14 days, with return postage paid by the customer.