SPF in a Jersey?

When clothing manufacturers report on the SPF, sun protection factor, in an item of clothing, I usually laugh.  Seems absurd.  I’ve never gotten sunburn through an item of clothing in my life.  It’s like calling soda fat free.

I might have to revise.  Thanks to Mark Cavendish for snapping this topless pic of best bud Bernie Eisel.  You can see where his hrm strap rests, his bib straps rest, and where the ultra-thin back panel of his Sky jersey ends.

 




 

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