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Q&A What's the UPF of a T-Shirt or jeans?

Many outdoor clothing items advertise themselves with a UPF (Ultraviolet protection factor) of 30 or even 50. How does that compare with a normal cotton T-Shirt or a pair of jeans? Do I have to use...

1 answer  ·  posted 12y ago by Peter Hahndorf‭  ·  last activity 5y ago by System‭

Question clothing health uv-protection