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Buying sunglasses online is straightforward once you know what to look for. The main challenges – face fit, lens quality, and frame material – can all be resolved before you place an order.
How Does Face Shape Affect Frame Choice?
Sunglasses come in square, rectangular, round, oval, aviator and browline shapes. The general rule is contrast: frames that contrast with your face geometry tend to work best. Round frames balance angular faces; more structured rectangular frames suit rounder faces. That said, proportions matter as much as shape – a frame that’s too wide for your face reads as costume regardless of the shape.
The most reliable approach is to measure the width of your face from temple to temple and compare it to the frame’s total width measurement. A good product page lists this. If it doesn’t, that’s a red flag. For a full guide to face shape and frame choice, see the face shape guide.
What Should You Look for in Lens Quality?
UV400 certification is non-negotiable. It means the lenses block all light with wavelengths up to 400 nanometers – covering both UVA and UVB completely. Dark lenses without UV coating are worse than no sunglasses at all: the tint causes pupils to dilate while the lens lets damaging UV through. Always check for UV400 stated explicitly in the product description. For a full explanation, see the UV protection guide.
Beyond UV: if you’ll be spending time near water, driving, or skiing, polarized lenses are worth it. They eliminate horizontal glare from reflective surfaces in a way that standard lenses can’t. For more on polarization, see the polarized sunglasses guide.
Which Frame Material Should You Choose?
Acetate frames hold their shape, age well and have a depth to the material that cheaper plastic doesn’t replicate. They’re heat-adjustable if the fit is slightly off. Metal frames are lighter and more minimal but can become uncomfortable in temperature extremes – cold in winter, hot against the skin in direct sun. Natural wood temples, used in some premium acetate frames, add warmth and don’t conduct heat or cold the way metal does. For more on what makes acetate quality differ, see the acetate guide.
Whatever frame material you choose, look for spring hinges: they flex beyond the standard open position and absorb the daily stress of being packed into bags, sat on, or compressed. Frames without spring hinges are more likely to break at the hinge under normal use.
What Else Should You Check Before Ordering?
Frame measurements: look for total width, lens width, bridge width and temple length listed in the product specs. These numbers tell you whether the frame will actually fit your face before you order. Return policy: shop from brands that offer at least 14 days and accept unworn items. A brand with very restricted returns on eyewear is signaling that fit complaints are common. Real photography: product pages that show only computer renders rather than real-world photos often have a significant gap between how the product looks online and how it actually arrives.
“I ordered based on the photo alone, took the risk that they might not fit – and they fit perfectly.”
Worth Considering
Paloma (round clear acetate, 139mm total width) for medium faces – the most versatile frame in the collection for online buying because the round shape is forgiving across face types. Sumatra (round, zebrawood temples) for a classic shape with natural material detail.
Browse the full sunglasses collection – frame dimensions and UV specs listed on every product page. Free returns on all orders.
Mr. Woodini was founded in 2018. We design eco-accessories built from materials with a story – recycled wood temples, natural stone beads, handcrafted construction. Our guides are written from direct experience: testing frames daily, sourcing materials, and building pieces by hand. Learn more about us.
Questions About Buying Sunglasses Online
Check the total frame width measurement – it should roughly match the width of your face from temple to temple. If the product page doesn’t list frame measurements, that’s a red flag worth taking seriously before ordering.
UV400 stated explicitly in the product specs. Dark tinted lenses without this certification provide no UV protection – the tint actually increases UV damage by causing your pupils to dilate while letting harmful light through.
At least 14 days, accepts unworn items in original condition, offers exchanges as well as refunds. Confirm whether return shipping is covered. A brand with no returns on eyewear is a red flag – fit can’t be verified before you receive the product.
Acetate holds its shape under daily use, ages well and can be heat-adjusted by an optician if the fit is slightly off. Cheap plastic frames tend to become brittle over time, especially at the hinge, and can’t be adjusted the same way. Spring hinges on any frame material make a significant difference to long-term durability.