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UPF Fabric for Sun Protection - Patagonia

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Sun Protective Clothing - The Skin Cancer Foundation

Ultraviolet Protection Factor (UPF) indicates how much UV radiation (both UVB and UVA) a fabric allows to reach your skin. For example, a UPF 50 fabric blocks 98 percent of the sun’s rays and allows two percent …

How to Choose Sun Protection (UPF) Clothing | REI Co-op

Excellent. 2.0. A UPF rating of 30 indicates the fabric of a garment will allow 1/30th (roughly 3 percent) of available UV radiation to pass through it. A garment rated UPF 50 permits …

Sun protective clothing - Wikipedia