This is a UPF 50+ Hat for Premium Sun Protection. What is UPF protection? Follow this link for more information! 
https://www.hatsunlimited.com/what-is-upf/

The Karen Keith Two Tone Lampshade Hat is a beautiful and elegant sun hat that features a 4" brim and crown height providing an ideal amount of coverage. This beautifully crafted hat is made from braided toyo straw comes finished with a gorgeous big grosgrain bow tied in the back. 

Brim Size: 4"

Crown Size: 4"