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The Ultimate Guide to Buying Sunglasses

The right sunglasses can completely change an outfit. This guide explains how to choose the correct frame shape, size, lens colour and fit while making sure the pair works with your wardrobe and offers proper protection.

Man on Beak Street in striped polo and sunglasses.

Sunglasses are one of the smallest pieces in an outfit, but they can change its entire direction. The right frame sharpens a simple T-shirt, gives relaxed denim more intention and can make an everyday look feel finished without adding anything loud.

The best pair should suit your proportions, stay comfortable and work with the clothes you already own. This guide covers frame shape, fit, lens colour, UV protection, materials and styling, with practical advice for choosing sunglasses you will genuinely wear. You can compare current options in our sunglasses collection as you read.

Man wearing dark sunglasses and a black leather jacket in a clean editorial portrait
A dark frame adds definition at eye level and gives relaxed clothing a sharper, more deliberate finish. Photography: Unsplash.

The Dikdik Test

Put the sunglasses on, look down, turn your head and smile. A good pair should stay level, avoid sliding down your nose and feel almost unnoticeable once it is in place.

Why sunglasses matter more than most accessories

Sunglasses sit at eye level, so they become one of the first details people register. Even when the rest of the outfit is minimal, the frame shape introduces a clear point of view.

A narrow rectangular frame brings a sharper Y2K edge. Rounded metal frames feel softer and more vintage. Oversized black sunglasses create more drama, while a familiar wayfarer-style shape is easier to wear repeatedly.

The strongest choice is usually the one that feels connected to your wardrobe. If you wear relaxed denim, skatewear and vintage-inspired layers, a frame with some visual weight will often feel more balanced than something extremely delicate.

01 Fit comes first

The frame should stay secure and comfortable without constant adjustment.

02 Match the proportions

Frame width and lens depth should balance your face and the scale of your clothing.

03 Choose for repeat wear

A good pair should work with several outfits rather than one very specific look.

How should sunglasses fit?

The best sunglasses almost disappear once they are on. You should not need to push them back up every few minutes or notice pressure around the bridge of your nose. A secure frame feels stable without drawing attention to itself.

The bridge should sit evenly, the arms should make light contact behind the ears and the frame should remain level when you move. When you smile, the lower edge should not lift heavily from your cheeks.

The fit is right when:

  • The frame sits level rather than leaning to one side.
  • The bridge feels secure without leaving deep pressure marks.
  • The arms do not pinch at the temples or behind the ears.
  • The lenses avoid resting heavily on your cheeks.
  • The sunglasses stay in place when you look down or turn your head.

Which sunglasses suit each face shape?

Face-shape advice is useful, but it should be treated as a starting point rather than a rule. Frame width, hairstyle, brow shape and personal style often make just as much difference.

Round faces

Rectangular and angular frames add definition. Narrow Y2K shapes can work particularly well when the frame is still wide enough to sit comfortably across the face.

Explore angular sunglasses
Square faces

Rounded, oval and softly curved frames create contrast against a stronger jawline. Aviator-style lenses can have the same softening effect.

Oval faces

Most frame shapes work. Concentrate on overall width, bridge comfort and whether the scale feels balanced rather than trying to follow one formula.

Heart-shaped faces

Aviators, rounded frames and shapes that carry slightly more width towards the lower edge can balance a broader forehead and narrower chin.

Long or rectangular faces

Deeper lenses and oversized frames add width and break up vertical length. Very narrow styles can exaggerate the longer shape.

Should sunglasses cover your eyebrows?

There is no single correct position. Classic frames usually follow the natural brow line and leave part of the eyebrows visible. Oversized styles may cover them completely, while narrow frames often sit beneath them.

What matters is that the top edge looks deliberate. A frame that cuts awkwardly through the middle of the brow can make the fit look slightly off, particularly when the sunglasses are too small or sitting too low.

The frame should work with your brow line, not compete against it.

Frame styles explained

Rectangular frames

Rectangular sunglasses feel sharp and modern, with a clear link to Y2K styling. Slim versions make more of a statement; deeper versions are easier to wear every day.

Oval frames

Oval sunglasses have a softer vintage character. They work especially well with relaxed denim, fitted tops, jewellery and cropped outerwear.

Aviator frames

Aviators introduce a recognisable vintage reference. Fine metal frames feel lighter, while larger lenses create a more expressive finish.

Wayfarer-style frames

This balanced, slightly angular shape moves easily between casual, vintage and cleaner streetwear outfits. It remains one of the safest options for regular wear.

Oversized frames

Oversized sunglasses create a deliberate focal point and offer greater coverage. They should still stay secure and avoid resting heavily on the cheeks.

Wraparound frames

Wraparound styles bring a sport, rave or futuristic influence. They work best when the rest of the outfit supports the same direction.

What lens colour should you choose?

Lens colour changes both the appearance of the frame and the way light feels through it. Neutral colours are easiest for daily use, while stronger tints give the sunglasses more personality.

01 Grey

Keeps colours neutral and works well in bright everyday conditions.

02 Brown

Adds warmth and useful contrast, particularly in mixed light.

03 Green

A balanced vintage option that reduces brightness without feeling overly dark.

04 Coloured tints

Best for expressive styling, although comfort and clarity vary by colour.

Are polarised sunglasses worth it?

Polarised lenses reduce glare reflected from flat surfaces such as roads, water and car bonnets. They can make bright conditions feel noticeably more comfortable, particularly when driving or spending long periods outdoors.

They are not essential for every fashion-led pair. Non-polarised lenses can still provide proper UV protection, so always treat polarisation and UV protection as two separate features.

Polarised

Best for reducing glare while driving, travelling or spending time near water.

Non-polarised

Suitable for everyday wear when the lenses still offer reliable UV protection.

What does UV protection actually mean?

Dark lenses do not automatically protect your eyes. The important detail is whether the lens blocks ultraviolet radiation. Check the product information rather than judging protection by tint or price.

A darker lens without adequate UV protection may allow the pupil to widen behind the tint while ultraviolet light still reaches the eye. The appearance of the lens therefore tells you very little about its protective quality.

Worth checking

Do not assume that a darker, larger or more expensive pair offers better UV protection. Look for a clear specification before buying.

How do you choose the right frame size?

Frame width should usually sit close to the width of your face. The hinges should not extend far beyond the temples unless the design is intentionally oversized.

The bridge controls how securely the sunglasses sit on the nose, while the arm length determines comfort behind the ears. Lens depth affects both coverage and visual scale.

Measure before you buy

Four measurements that affect the fit

01Frame width

The overall width should balance your face without pressing at the temples.

02Lens width

Wider lenses create more coverage and a stronger visual presence.

03Bridge width

The bridge determines how securely the sunglasses sit on your nose.

04Arm length

The arms should reach behind the ears without pushing the frame forwards.

Which frame materials are best?

Acetate-style frames feel substantial and allow for rich colour, pattern and transparency. They work especially well in black, tortoiseshell and bolder statement finishes.

Metal frames are usually lighter and bring a finer vintage character. Adjustable nose pads can improve the fit, although they may need occasional adjustment.

Lightweight moulded frames are practical for everyday wear. Whatever the material, pay close attention to the hinges, lens seating and general finish, as these details usually reveal more than the label alone.

Dark denim styled with sunglasses, a keychain and small streetwear accessories
Sunglasses work best when their colour and visual weight connect naturally with the other accessories in the outfit. Photography: sammy swae / Unsplash.

How to style sunglasses with streetwear

With baggy jeans

Choose a frame with enough presence to balance the wider silhouette. Rectangular, wayfarer-style and oversized frames can all work, depending on how sharp or relaxed you want the outfit to feel.

Explore Baggy Bliss
With hats and caps

Make sure the arms sit comfortably beneath the hat and that the frame does not feel crowded by a low brim. Slimmer frames often pair naturally with caps and beanies.

Shop hats and caps
With jewellery

Metal frames connect naturally with chains, rings and earrings. Black acetate creates stronger contrast against silver jewellery and cleaner clothing.

Explore jewellery
With simple T-shirts

A more distinctive frame can become the main accessory when the rest of the outfit is minimal. It is one of the easiest ways to make a plain look feel considered.

Shop T-shirts and shirts

For a complete relaxed outfit, combine the sunglasses with correctly proportioned denim using our guide to how baggy jeans should fit. You can also compare options in the best baggy jeans for every budget and finish the waist with the best belts to wear with baggy jeans.

Common mistakes when buying sunglasses

01

Choosing shape before fit

A flattering shape still fails when the bridge slips, the arms pinch or the frame sits unevenly.

02

Assuming dark lenses mean protection

Lens darkness and UV protection are separate. Always check the product specification.

03

Buying frames that are too narrow

Pressure at the temples becomes uncomfortable and can force the arms to flare outwards.

04

Ignoring how they work with headwear

A frame can become uncomfortable when its arms are trapped beneath a cap or beanie.

05

Choosing a statement pair with no repeat outfits

A distinctive frame offers better value when it works with several pieces already in your wardrobe.

Your sunglasses buying checklist

  • The frame sits level and feels secure.
  • The width suits your face and intended styling.
  • The bridge does not slide or pinch.
  • The arms remain comfortable behind the ears.
  • The lenses provide proper UV protection.
  • The colour works with several outfits you already own.
  • The hinges feel stable and open smoothly.

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Frequently asked questions

What sunglasses suit my face shape?

Angular frames often balance round faces, while rounded frames can soften square faces. Oval faces suit most shapes. Use these ideas as a starting point, then prioritise width, bridge fit and personal style.

Should sunglasses cover your eyebrows?

They can, particularly when the design is oversized. Classic frames usually follow the brow line, while narrow frames often sit beneath it. The position should look deliberate and remain comfortable.

Are polarised lenses worth it?

They are worthwhile for reducing glare from roads, water and other flat surfaces. They can improve comfort outdoors, but they do not replace proper UV protection.

What lens colour is best?

Grey offers the most neutral view, brown adds warmth and contrast, and green provides a balanced vintage feel. Coloured tints are usually better for expressive styling than maximum versatility.

Do expensive sunglasses offer better UV protection?

Not automatically. Price may reflect materials, branding and construction, but UV protection should be confirmed through the product specification rather than assumed from cost.

Which sunglasses suit streetwear?

Rectangular, oval, wayfarer-style, wraparound and oversized frames can all work with streetwear. Choose a shape that supports the proportions and attitude of the outfit.

How should sunglasses fit?

They should sit level, remain secure when you move, avoid pinching at the bridge or temples and feel comfortable behind the ears.

Final thoughts

The best sunglasses combine fit, protection and repeatable style

Begin with comfort and proportion. Make sure the bridge feels secure, the arms do not pinch and the lenses provide proper UV protection. Once those essentials are right, choose the frame shape and lens colour that make sense with your wardrobe.

Black, tortoiseshell and understated metal frames are the easiest place to start. Narrow Y2K, coloured, oversized and wraparound styles become worthwhile when they support a clear direction and work with more than one outfit.

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