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[pct-l] Cloth choice



Great tip!

On Feb 25, 2006, at 9:18 PM, Mark Verber wrote:

>
>
> On 2/25/06, Richard Woods <wpsnotebook@charter.net> wrote:  
> Something to think about is how much sun protection you're really
> getting. Sure, cotton and linen in the desert might help to keep you
> cool, but how about the UV protection factor?
>
> Cotton that has been treated can actually provide decent UV  
> protection.  A brand new cotton tee-shirt is likely to provide a  
> mere UPF5 protection.  But that same tee-shirt washed a couple  
> dozen times in a detergent with brightener (or once in http:// 
> www.sunguardsunprotection.com/ ) will raise the protection to UPF30.
>
> --mark
>
>
>