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/

This Scala cotton sun hat is a fabulous light-wight style with a canvas look. It features the maximum UPF rating of 50+ and also a discreet inner drawstring to adjust the size. Altogether, this is a great "pick up and go" hat.

For the smaller version of this hat with a 2.5" brim please see: Scala - Small Brim Canvas Bucket Hat

Brim:

• 3"
• 1" Upbrim

Crown:

•  3 1/2"