What does a UPF rating actually block?

Your FURTALK visor is UPF 80+. Drag the slider to compare what each rating blocks.

98.75% of UV rays blocked

Only 1.25% reaches your skin. That is about 1 ray in 80.

Now showing UPF 80+

UPF measures how much UV a fabric blocks. A UPF of 80 lets 1/80th of UV through, so it blocks 98.75%. The face here is just for fun. Sun protection depends on real coverage and reapplied sunscreen.

A free tool from Jen Tried It