Finding genuinely stylish sunglasses at a brilliant price is one of summer's great pleasures, and right now Secret Sales has a fantastic edit of designer frames all under £50. Whether you are after a sleek metal aviator, a dramatic cat-eye or a classic oversized silhouette, there is something here for every face shape and every outfit. Brands like Calvin Klein, Guess, Karl Lagerfeld and Police rarely come this affordable, so it pays to act fast on flash-sale prices.
Every pair in this list comes from a trusted designer name, meaning you are getting real quality without the full boutique price tag. Read on for our pick of the ten best designer sunglasses to buy this summer 2026.
1. Calvin Klein Jeans Polycarbonate Green Sunglasses, £28
At just £28, these Calvin Klein Jeans Polycarbonate Green Sunglasses are a seriously strong buy for summer 2026. The lightweight polycarbonate frame is built to handle everyday wear without weighing you down, and the green tint brings a fresh, fashion-forward edge that feels right in step with this season's colour trends.
If you want a pair that crosses the line between sportswear cool and genuine designer credibility, this is it. The CKJ branding keeps things subtle but recognisable, making these an easy win whether you are heading to a festival or just commuting on a sunny afternoon.
Calvin Klein Jeans Polycarbonate Green Sunglasses£139.99£28.0080% OffShop now2. Guess Shiny Nickeltin Metal Frame Gradient Smoke Lens Sunglasses, £25.11
These Guess Shiny Light Nickeltin Metal Frame Gradient Smoke Lens Sunglasses are the lowest-priced pair on this list at £25.11, and yet they look anything but budget. The polished nickeltin metal frame catches the light beautifully, and the gradient smoke lenses add just enough tinted mystery to elevate a simple outfit instantly.
Guess has a real knack for designing sunglasses that feel luxurious on the face, and this pair is no exception. The slim metal silhouette suits oval, oblong and heart-shaped faces particularly well, and the understated colourway means they will pair just as easily with a summer dress as with a sharp blazer.
Guess Shiny Light Nickeltin Metal Frame Gradient Smoke Lens Sunglasses£65.00£25.1161% OffShop now3. Karl Lagerfeld Cat Eye Sunglasses KL6127S, £34.02
Few silhouettes are as emphatically chic as a cat eye, and the Karl Lagerfeld KL6127S at £34.02 delivers that drama in spades. The sharp-edged acetate frame carries the Lagerfeld house aesthetic perfectly, blending a modern edge with that unmistakable sense of Parisian confidence. Acetate is also wonderfully comfortable for all-day wear and holds its shape far better than cheaper plastics.
This is the pick for anyone who wants their sunglasses to make a statement. Wear them with a monochrome ensemble and let the frame do all the talking. At this price, a Karl Lagerfeld accessory is an absolute bargain.
Karl Lagerfeld Cat Eye Sunglasses KL6127S Women£135.00£34.0275% OffShop now4. Calvin Klein CK19534S Fashion Sunglasses, £39.99
The Calvin Klein CK19534S Fashion Sunglasses at £39.99 represent everything the brand does best: clean lines, restrained elegance and build quality that outlasts a single season. Calvin Klein sunglasses are designed to complement rather than compete with your outfit, making them a wardrobe investment piece rather than a passing trend.
The CK19534S sits comfortably in the upper end of this edit price-wise, but the manufacturer's warranty and the unmistakable Calvin Klein aesthetic make it worth every penny. These are the sunglasses you reach for on a job interview, a garden party or a weekend city break.
Calvin Klein CK19534S-270 CK19534S 58 270 Fashion Sunglasses£89.00£39.9955% OffShop now5. Guess Shiny Black Framed Smoke Lens Sunglasses, £28.35
A shiny black frame with smoke-tinted lenses is one of the most timeless combinations in eyewear, and Guess has nailed it with this pair at £28.35. The frames exude a sleek, polished confidence that works from brunch to evening, and the smoke lenses provide solid UV protection without blocking the world out entirely.
These are the sunglasses you hand to a friend when they ask to borrow a pair and they never want to give them back. Classic, versatile and very easy to wear, they are an absolute staple for summer 2026.
Guess Shiny Black Framed Smoke Lensed Sunglasses£100.00£28.3572% OffShop now6. Calvin Klein Brown Lens Brown Sunglasses, £36.45
Brown sunglasses have quietly become one of the most sophisticated choices you can make, and the Calvin Klein Brown Lens Brown Sunglasses at £36.45 prove exactly why. With a generous 63mm lens width, these are a genuinely oversized frame that delivers that effortlessly cool, off-duty model aesthetic. They conform to British Standard EN 1836:2005 and offer full UVA and UVB protection, so style and safety are both covered.
The warm, tonal brown palette suits a huge range of skin tones and looks especially striking against summer-ready outfits in cream, camel or olive. A sunglasses case and cleaning cloth are included, which at this price point is a thoughtful touch.
Calvin Klein Brown Lens Brown Sunglasses£95.00£36.4562% OffShop now7. Police Shiny Black Sunglasses, £37.26
Police is a brand with serious eyewear heritage, and these Police Shiny Black Sunglasses at £37.26 are a confident, no-nonsense pick for anyone who wants a slightly more masculine or androgynous silhouette. The 56mm lens width and 20mm nose bridge give them a bold, structured presence on the face, and the glossy black finish feels premium against the skin.
Everything you need is in the box, including a case and cleaning cloth, and the frames conform to British Standard EN 1836:2005 for full UV compliance. These would make a great gift, too, particularly for anyone with an eye for understated, authoritative style.
Police Shiny Black Sunglasses£159.00£37.2677% OffShop now8. Guess Gradient Blue Lens Matte Blue Sunglasses, £28.35
For those willing to be a little bolder with their eyewear this summer, the Guess Gradient Blue Lens Matte Blue Sunglasses at £28.35 are a genuinely exciting choice. The matte blue metal frame is quietly on-trend without veering into costume territory, and the gradient blue lenses add depth and movement to the whole look.
With a 54mm lens width and 140mm arm length, the fit is neat and precise rather than oversized, which makes them particularly well suited to smaller or medium-sized faces. Full UV protection and British Standard EN 1836:2005 compliance mean the function matches the fashion.
Guess Gradient Blue Lens Matte Blue Sunglasses£140.00£28.3580% OffShop now9. Guess Aviator Shiny Gunmetal Sunglasses, £28.35
The aviator is one of the most enduringly cool silhouettes in sunglasses history, and these Guess Aviator Shiny Gunmetal Sunglasses at £28.35 are a masterclass in getting the look right at a fraction of the designer price. The shiny gunmetal finish is sleek and a little edgy, sitting a touch darker and more contemporary than a traditional gold aviator.
Aviators suit almost every face shape, which is part of their universal appeal, and the Guess branding adds just enough designer credibility to justify slipping these out of your bag in any setting. A brilliant everyday summer pair that packs down easily into a beach bag or carry-on.
Guess Aviator Shiny Gunmetal Sunglasses£130.00£28.3578% OffShop now10. Calvin Klein CK19568S Fashion Sunglasses, £38.99
Rounding off this edit is the Calvin Klein CK19568S Fashion Sunglasses at £38.99, another elegant offering from one of the world's most reliable eyewear brands. With a manufacturer's warranty included and Calvin Klein's signature commitment to quality construction, these are a pair you can wear confidently season after season.
The 58mm lens width places them squarely in statement territory without going full oversized, striking a flattering balance for most face shapes. If you have been looking for a versatile, investment-worthy pair of sunglasses that sits just under the £40 mark, this Calvin Klein finish the list on a high note.
Calvin Klein CK19568S 58 410 Fashion Sunglasses£89.00£38.9956% OffShop nowFrom gunmetal aviators to bold cat-eye acetate frames, this edit proves that great designer sunglasses do not have to cost a fortune. All ten pairs are available now on Secret Sales at under £50, so grab your favourites before the flash-sale prices disappear.
FAQs
Which sunglasses shape suits most face shapes?
The aviator silhouette, such as the Guess Aviator Shiny Gunmetal Sunglasses, is widely considered the most universally flattering shape. Oval and round faces also tend to suit bold rectangular or cat-eye frames like the Karl Lagerfeld KL6127S.
Do these designer sunglasses come with a case?
Several pairs in this list, including the Calvin Klein Brown Lens Sunglasses, the Police Shiny Black Sunglasses and the Guess Gradient Blue Sunglasses, come with a sunglasses case and cleaning cloth included in the box.
Are all of these sunglasses under £50?
Yes. Every pair in this edit is priced under £50, ranging from £25.11 to £39.99.
