Sun Smarts

All T-Shirts Are Not Created Equal

A cotton tee may not safeguard us at the beach, let alone on the street. Dry, a white cotton shirt provides and ultraviolet protection factor (UPF) of 7*, and wet from the pool, the protection level drops to about UPF 3, exposing us to UV radiation.

Today, 90% of skin cancers and premature aging are a result of UV exposure. As skin cancer rates are on the rise, this is one easy way to keep your skin safe from UVA and UVB rays. Coolibar’s ZnO t-shirts, tunics, dresses, hoodies, polos, and pants are super soft, comfy and UPF 50+, blocking 98% of both UVA and UVB rays. All our fabrics are guaranteed UPF 50+ from the first time you wear a shirt to the day you retire it. We may be t-shirt and fabric geeks, but the right fabric matters.  

 

What is ZnO?

ZnO is a proprietary Coolibar fabric, a blend of cotton, bamboo viscose (a natural UV fighter) fabric embedded with millions of zinc oxide minerals. What makes our ZnO fabric unique is the zinc oxide minerals are inserted at the fiber level and can never be worn or washed out; they protect you as long as you need them for the lifetime of the garment. Zinc Oxide protects against UVA and UVB rays and has many skin comforting qualities, often used on the most sensitive skin types.

 

Why are clothes called UPF instead of SPF?

Between UPF and SPF, the concept is essentially the same, to protect your skin from ultraviolet radiation. What SPF is to lotions, liquids, and serums, UPF is to fabrics and clothing. Beyond the obvious difference between lotion and clothing, SPF measures sunscreen protection from UVB rays, the burning rays that lead to cancer. When applied correctly, an SPF of 30 blocks 97% of UVB rays (don’t forget to reapply too).  SPF doesn’t account for UVA rays which also can cause cancer and aging. Look for the broad spectrum on the label on your sunscreen.  UPF measures light transmittance, and Coolibar UPF 50+ blocks 98% UVA/UVB rays. Coolibar fabrics exceed all U.S. standards and are tested to the Australian standard, the highest rating standard in the world. All Coolibar fabrics are UPF 50+.

 

When shopping for your next t-shirt consider going with a tee with UPF power to keep your skin safe while you enjoy all of your adventures.

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June 5, 2017
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