A UPF of 50+ indicates that this fabric was tested and will block up to 98% of the Sun’s UVA & UVB rays.
For More Details Visit: https://www.sunnsand.net/upf-protection/
Beautiful hat! The brim is just a little bigger than my other similar hats and I love that it is! More protection when out on the pontoon! It is a very expensive-looking hat with ribbon detail. Love the way it loops in the crown! Can't wait to use it this summer.