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Understanding UV clothing for better sun protection
6 minutes
We often think a lightweight shirt is enough sun protection. In reality, not all fabrics filter UV rays the same way. Some materials like cotton let a significant amount of radiation through, especially when thin, wet, or stretched. UV-protective clothing is specifically designed to provide more consistent protection across conditions.
Why all clothing is not equal when it comes to uv protection
Protection and comfort all day long
When you’re outside for extended periods, you know conditions can change quickly: the sun coming in and out, humidity, wind, sweat, and more. UV-protective clothing provides more stable and long-lasting protection through these kinds of changes, unlike sunscreen, which needs to be reapplied several times throughout the day, especially after rain or swimming.
But it’s not only about sun protection. The fabrics used in these garments are also designed with comfort in mind in warm conditions. They breathe well, dry quickly, and wick away moisture, helping prevent that sticky or overheated feeling after a few hours of activity.
That’s often where the difference becomes noticeable compared to regular clothing on longer outings: you stay covered and protected without overheating. In that context, it’s easy to see why this type of fabric is widely used for hiking, running, climbing, cycling, and water-based activities.
Merino wool also offers natural UV protection, generally higher than cotton. However, its performance varies depending on thickness and knit density, meaning not all merino garments are automatically designed or certified as UV-protective pieces.
How to choose your uv-protective clothing
Even when the sky is overcast, UV rays still reach the skin. And because it feels cooler, exposure is often underestimated, especially during longer or repeated outings. In this context, UV-protective clothing becomes a simple and effective base layer: it covers the most exposed areas—arms, shoulders, neck—and provides consistent protection without needing constant attention throughout the day.
From there, the choice mostly depends on how you move outdoors. There isn’t one “right” UV garment, but rather options suited to different types of activities. Some prioritize lightness and ventilation for high-output days, while others focus on fuller coverage for longer exposure.
UPF is a good starting point, but it doesn’t tell the whole story. Fit, breathability, and how the fabric feels after hours of activity matter just as much. In the end, the right piece is often the one you forget you’re even wearing once you’re out there.
And if the choice feels a bit overwhelming, that’s normal. It’s exactly where the advisors at La Cordée stores can help you sort things out, based on your activities and how you like to spend time outdoors.
Frequently Asked Questions about UV-Protective Clothing
Does UV-protective clothing replace sunscreen?
No. They cover a large part of the body, but some areas remain exposed, such as the face and hands. UV-protective clothing and sunscreen are complementary protection methods.
Are UV-protective clothes useful even with cloudy skies?
Yes. UV rays pass through clouds, even when the sun feels less intense.
Do all fabrics protect the same?
Not at all. A lightweight cotton fabric does not protect the same way as a technical textile designed to block UV rays. The type of fibre, its density, and its resistance to moisture all make a real difference.
Does the UV-protection factor of these clothes last?
Yes, to a certain extent. UV-protective clothing retains its properties for several seasons, especially when properly cared for (gentle wash cycle, no fabric softener, air drying). And if you have any questions, our in-store teams are there to help you understand the differences between models based on how you plan to use them.
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