Sun Smarts

How much sun does a regular shirt block?

There’s a reason why UPF 50+ clothing is becoming more popular with all ages. Clothing is a physical barrier between your skin and the sun and you might as well use it to your advantage. Not all clothing is created equally. There are many factors that can make certain clothing able to block UV rays better than others. The tightness of the weave, weight, type of fiber, color, and the amount of skin covered all affect the amount of protection that a garment can provide.

UPF is different than the SPF rating. They are not used in the same way and make sure you know the difference to keep yourself protected from the sun. UPF stands for ultraviolet protection factor and is the rating system used for clothing and fabrics. The UPF indicates how much of the sun’s UVA and UVB rays are absorbed. A fabric with the rating of 50 will only allow 1/50th of the sun’s UV rays to pass through. All Coolibar clothes are rated at UPF 50+ meaning that 98% of both UVA and UVB rays will be blocked. This reduces your exposure significantly.

SPF stands for sun protection factor and it is the rating that they give to sunscreens. It measures the amount of time it takes for sun-exposed skin to redden. UPF measures the amount of UV radiation that penetrates a fabric and reaches the skin. Time allotted does not matter for UPF rated fabrics, the rating has to to do with how much UV radiation can penetrate the fabric only. Make sure to check to see if your sunscreen is broad spectrum because SPF ratings do not tell you if the sunscreen blocks both UVA and UVB rays some only block the UVB rays.

As a rule, light-colored, lightweight and loosely woven fabrics do not offer much protection from the sun. That white shirt you slip on at the beach when you feel your skin burning provides only moderate protection from sunburn, with an average ultraviolet protection factor (UPF) of 7. The sun protection lowers to an approximate UPF of 3 when that shirt gets wet.

At Coolibar, we take protection seriously. Our proprietary fabrics block 98% of UVA and UVB rays, look good, wear well, and are guaranteed for a lifetime. No detail is too small for Coolibar, starting with those teeny tiny sun-bouncing minerals embedded in every single teeny tiny fiber and crafted into sun-stopping prints and styles. Trust our UPF 50+ fabrics to protect your right to play in the sun. Our fabrics are made in a way that they remain lightweight and comfortable but still provide the sun protection you need.

Tested more than any other fabric, endorsed by experts worldwide and recommended by dermatologists. Coolibar guarantees the UPF 50+ protection from the first day our product is worn until the very last day. Our fabrics are thoroughly tested at independent labs to ensure each product exceeds our UPF 50+ standard.

Coolibar was the first clothing to be recommended by the Skin Cancer Foundation. To receive The Skin Cancer Foundation’s Seal of Recommendation, sun-protective fabrics must have a minimum UPF of 30. We consider a UPF rating of 30-49 to offer very good protection and 50+ excellent protection. Remember not all UPF clothing is created equally, pay attention to wash out, testing practices, and what UPF rating they have.

Sources:

Skin Cancer Foundation

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