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Sunglasses Buying Guide: How to Buy Sunglasses That Fit And Protect
Sunglasses Buying Guide: How to Buy Sunglasses That Fit And Protect
9min read·Jim Volgano·Dec 4, 2025
You might never have given it much thought, but the sunglasses you wear should add more than style. They should also reduce eyestrain and protect your eyes against harmful ultraviolet (UV) rays, debris, and other hazards. Unfortunately, when you enter a sunglasses shop or browse one online, the vast number of options can make it hard to know which pair is right for you. However, with this sunglasses buying guide, you can know what to look for in your next purchase. Keep reading to learn everything you need to know to buy quality and fitting sunglasses.
Table of Contents
- Sunglasses buying guide: UV protection and polarization
- What sunglass lens color is the best?
- Visible light transmission for sunglasses
- What’s the best material for your sunglasses?
- How do you ensure your sunglasses fit?
- Where to buy sunglasses
- How to spot fake sunglasses
- Conclusion
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Sunglasses Buying Guide: How to Buy Sunglasses That Fit And Protect
Sunglasses buying guide: UV protection and polarization
Inadequate UV protection can lead to serious eye damage, which is why institutions like the FDA and ANSI Z80.3 require sunglasses to meet specific safety standards and carry accurate labeling. Still, some sunglasses may fall short of these requirements. So you need to be careful when choosing a pair.
UV protection details should appear on the hangtag or price sticker of the sunglasses. Check for a label stating UV400 or 100% UV protection, and if you don’t see it, choose another pair.
Sunglasses with UV protection guard your eyes from harmful radiation, but they don’t automatically cut surface glare. As such, you may need to go for sunglasses with polarized lenses.
Are polarized sunglasses better than non-polarized ones?
Polarized sunglasses are perfect when you need to reduce glare from surfaces like snow, water, or roads. Non-polarized options, on the other hand, are better for activities where maintaining natural contrast is important, such as stargazing. Polarized lenses boost contrast and make colors look richer while cutting out harsh reflections from highly reflective areas, like lakes. They also improve clarity on foggy or partly cloudy days as well, which helps reduce eye strain and fatigue.
Most polarized sunglasses come with built-in UV protection, giving you a two-in-one benefit.
What sunglass lens color is the best?
Lens colors influence how much visible light reaches your eyes, how accurately you perceive colors, and how well you see contrast. When choosing a tint, make sure it matches the environment or lighting conditions you’ll be in.
Dark tints like brown, gray, and green work well for daily wear and most outdoor activities. These deeper shades mainly reduce glare and help cut eyestrain in moderate to bright light. Gray and black in particular are popular because they tend to maintain natural color balance, while brown or amber can boost contrast and are useful for activities like hiking.
Yellow, gold, amber, rose, vermillion, and other lighter tints perform better in moderate to low light. They’re commonly used for skiing, snowboarding, and other snow sports. These colors enhance depth perception, increase contrast in flat or tricky lighting, improve object visibility, and generally brighten your surroundings. Yellow lenses, in particular, are great for dawn or early-morning runs.
Sunglass lens coatings
The more expensive the sunglasses, the more likely they are to include multiple layers of specialized coatings. These may include a hydrophobic coating to help repel water, an anti-scratch layer for better durability, and an anti-fog coating that’s useful in humid weather or during high-intensity activities.
A mirrored or flash coating is a reflective film applied to the outer surface of some lenses. Its main job is to cut glare by bouncing away much of the incoming light. Mirrored coatings tend to make your view look darker, so manufacturers often pair them with lighter lens tints to balance the overall brightness.
Sunglass lens materials
The lens material of your sunglasses influence clarity, weight, durability, and overall cost.
Glass offers outstanding optical clarity and strong scratch resistance, but it’s heavier than other options and tends to be more expensive. When struck, it may “spider” rather than chip or fully shatter.
Polyurethane delivers excellent impact resistance and high-quality clarity. It’s lightweight and flexible, though it comes at a higher price.
Polycarbonate provides very good clarity and exceptional impact resistance. It’s affordable, light, and low-bulk, but more prone to scratching. Acrylic is the budget-friendly alternative to polycarbonate, ideal for casual or occasional wear. However, it’s less durable and not as optically clear as glass or polycarbonate, and it can introduce some image distortion.
Visible light transmission for sunglasses
You may notice the abbreviation VLT on some sunglasses. It stands for Visible Light Transmission, which refers to the percentage of light that passes through the lenses and reaches your eyes. This percentage is influenced by the lens tint, thickness, material, and any coatings applied to the surface.
Here’s a general guide to selecting sunglasses based on VLT levels:
- 0–19% VLT: Best for very bright, sunny conditions.
- 20–40% VLT: Suitable for everyday, all-purpose use.
- 40%+ VLT: Ideal for cloudy, overcast, or lower-light environments.
- 80–90%+ VLT: Nearly clear lenses designed for very dim light or nighttime conditions.
What’s the best material for your sunglasses?
Choosing a frame material is equally important because it determines how long your sunglasses will last, how comfortable they feel, and how safe they will be.
Metal frames are easy to adjust to your face and tend to be less intrusive in your field of vision. They’re usually more expensive but less durable than other options, and they’re not ideal for high-impact activities. Also keep in mind that metal can get very hot if left in a closed-up car. Common metals used include stainless steel, aluminum, and titanium.
Nylon is lightweight, inexpensive, and generally more durable than metal. Some nylon frames offer high impact resistance, making them suitable for sports. Most nylon frames aren’t adjustable unless they have an internal wire core that allows for adjustments.
Most “handmades” are acetate-made. These types of plastic are common in high-style eyewear but come in many color options but are less flexible and less forgiving than other materials.
How do you ensure your sunglasses fit?
The weight of your sunglasses should be evenly distributed between your ears and nose. Frames should be light enough to avoid excessive pressure or friction on these contact points. They should fit snugly on your nose and ears without pinching or rubbing, and your eyelashes should not touch the frame.
For metal or wire-core frames, you can carefully adjust the fit by bending the bridge or temples. Adjustable nosepieces should be pinched closer together or farther apart to achieve a comfortable fit.
Even when buying online, you can check for proper fit. Look for product descriptions with fit guidelines, such as “fits medium to large face.” Some brands also offer temples in multiple lengths or adjustable designs to help ensure a secure and comfortable fit.
Where to buy sunglasses
With the tips above, you can visit any local shop and buy quality sunglasses. A quick search online for ‘sunglasses near me’ will display nearby stores that sell sunglasses. In most cases, you’ll see results like Sunglass Hut or LensCrafters. These shops have staff who offer try-ons, demo fits, instant adjustments, and authenticity checks. Macy’s, Walmart Vision Center, and Target Optical are also top physical stores for buying sunglasses.
Where is the best place to buy sunglasses online?
If you want to shop sunglasses online, sites like Alibaba.com (learn how to order from Alibaba here), eBay, Amazon, and other marketplaces are a good starting point. These are general online marketplaces. But for more specialized options or specific sites selling sunglasses online, consider sites like Warby Parker, GlassesUSA, Nordstrom, Solstice Sunglasses, Knockaround, Zenni Optical, and EyeBuyDirect.
Are expensive sunglasses worth it?
Generally, the main reason that high-end sunglasses can be so expensive is the reputation of the brand. The brand is a status symbol that you’re paying for when you buy designer sunglasses. Other factors that raise the cost include the quality of the lenses, the coatings and special features they offer, the durability of the frame materials, and whether the sunglasses are handmade. If you want the highest tier of these features, premium brands are an option.
However, if you have a limited budget, just go for the inexpensive sunglasses. Remember that most sunglasses in the USA, even toys, have UV rays and will basically serve you well.
How to spot fake sunglasses
Fake sunglasses may look pretty passable at first, but once you take a closer look, and especially once you feel the quality, you’ll start to notice a lot of little things that are wrong. Some of the telltale signs that they’re fake include:
The box and packaging
A fake pair may have a box that is very slim and not as big as it would be on an authentic pair. The cases might also look like they’re made from lighter, cheaper materials or may be the wrong color.
Fake stickers and labels
If any sticker or tag seems out of place, wrong, or unrelated to the company, that’s a major red flag.
Front frame and logo problems
A fake may look pretty passable at first, but the details give it away. You may notice a little hole or gap where the metal is not connected to the lens. This would never be acceptable on an authentic pair. The logos and etchings may be present but with much lower-quality finishing. Numbering that is wrong (for example, showing “00” instead of “3 out of 150”) may also suggest it’s fake.
Hinges and build quality
As soon as you feel the sunglasses, you may notice the hinges feel terrible—one side may be floppy, move up and down too easily, or the frame may rattle when opened. Hinges or metal pieces that do not line up perfectly or leave an unacceptable gap also imply the pair is not real. Also check the edging; if it’s overly soft or not nearly as crisp as it should be, especially for brand sunglasses like Jacques Marie Mage, that’s a warning sign.
Wrong materials (metal, weight, strength)
Another major sign that a pair of sunglasses is fake is the way it feels by the weight alone. It may feel too light or bend very easily—if you can move the frame to the side and it bends or even breaks off, that’s a strong indicator that the materials are not genuine.
Conclusion
Whenever you buy a pair of sunglasses, whether online or from a physical shop, make sure they have UV protection and are made of quality materials like nylon and acetate. Look at the labels to determine the UV protection percentage. You can also choose between polarized and non-polarized options, with the former being best suited for reducing glare. Try on sunglasses or check the specs in product descriptions to ensure they fit you well.
If there’s anything you didn’t find in this sunglasses buying guide, especially when you want to buy and sell them, use ACCIO to get all the insights you need. The AI-powered tool gives instant answers to questions on business operations, management, product sourcing, marketing, selling, and more. It is designed for use by business people to get all the insights they need to grow.