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Foldable sunglasses fit easily into a handbag, coat pocket or glove compartment. This makes them practical for commuting, holidays and sunny walks. However, foldable models can differ considerably in fit, hinges and lens finish.
Pay particular attention to three common pitfalls:
A low price does not automatically indicate poor quality, but a high price is no guarantee of a good match either. Start by considering the material, lens information, dimensions and the situations in which you plan to wear the sunglasses.
Dark sunglasses do not automatically block ultraviolet light. Look for a clear mention of UV400 protection in the product information. This refers to protection against UV radiation up to 400 nanometres.
The Beneunder models in this selection list UV400 protection. The stated UV-blocking percentages come from the manufacturer's product information. According to Beneunder's own information, the FD315 models block at least 99.8% of UV radiation, while the FD421 and FD01h models block at least 99.9%. Always check the current product specifications when ordering.
Sunglasses with anti-reflective lenses can reduce distracting reflections on the lens surface. This can be useful when cycling, walking or driving. However, anti-reflective treatment does not automatically mean that the lenses are polarised.
For sunglasses for driving, it is sensible to check:
According to Beneunder's own information, the OAR coating on the FD315 range is associated with a reduction in reflections of at least 99.8%. For the FD421, a reduction of at least 99.6% is stated. These figures are manufacturer claims and are not a general guarantee for every driving or lighting situation.
TR90 is a lightweight plastic material often used for flexible frames. With foldable sunglasses, the hinges are important too. A compact design with several folding points can be convenient, but it requires careful opening and closing.
Pay attention to:
Glasses that are too narrow may feel tight on wider faces. An oversized model, on the other hand, may be less stable when walking or cycling. The measurements in the product description are usually given in inches; 1 inch is 2.54 centimetres. For example, a frame width of 5.71 inches is approximately 14.5 centimetres.
Why it suits this profile: These cat-eye sunglasses combine a distinctive shape with a foldable TR90 frame and soft contact points. This makes them suitable for everyday use and easy to carry in a bag.
The product description specifies UV400 lenses, OAR anti-reflective treatment, air-cushion nose pads and five-point elastic hinges. This means you can see exactly which features you are buying in advance.
5.8-inch frame width, TR90 frame, UV400 according to the manufacturer and a compact folding design.
Why it suits this profile: The Boston shape has a subtle, versatile look. The combination of adjustable arms and adjustable nose pads is appealing when a personalised fit matters more than a bold design alone.
The listing mentions oleophobic and scratch-resistant coatings in addition to UV400 and anti-reflective treatment. According to Beneunder's own information, these layers are designed to reduce fingerprints and everyday wear.
TR90 frame, weight of 0.97 oz, three arm positions and a folded thickness of 1.15 inches.
Why it suits this profile: These oversized sunglasses are designed for those looking for larger lens coverage and a lightweight construction when travelling, enjoying outdoor activities or driving.
The product information states a weight of 26 grams and a folded thickness of 35 millimetres. This makes portability measurable rather than based solely on the word “compact”.
Tri-fold design, TR90 frame, 5.71-inch frame width and UV400 plus OAR coating according to the manufacturer.
Always fold the sunglasses using the hinges intended for this purpose. Do not force the arms if they are misaligned. Clean the lenses with a soft microfibre cloth and store the sunglasses in the case provided. Do not leave them loose next to keys or other hard objects.
For sunglasses for travelling, also consider heat. A frame left in a hot car may warp more quickly than during normal use. After buying, also check that the sunglasses sit straight on your face, do not press against your temples and do not slide forwards when you move your head.
We have put together a complete, up-to-date list of products that fully meet these strict selection criteria and the applicable European safety regulations.
That depends on the lens category, light transmission, fit and anti-reflective treatment. A model with an anti-reflective coating may help reduce reflections, but always check whether the lens is suitable for the conditions in which you drive. Sunglasses should not make it harder to see traffic lights, signs or other road users.
Their lifespan depends mainly on how the hinges are used, as well as storage and cleaning. A flexible TR90 construction can be practical, but every folding point remains a component that needs to be handled carefully. Store the sunglasses in a case and fold and unfold them gently to avoid unnecessary pressure.
Lower weight can reduce pressure on the nose and temples, but comfort also depends on the bridge width, arm length and frame shape. Lightweight sunglasses with the wrong dimensions can still feel uncomfortable. Always compare the stated measurements with a pair of sunglasses you already find comfortable to wear.
