A fair brim and there is no uncomfortable "one size fits all" but there is the right size for everyone.
Verified buyer

The Broad Spectrum is made of a stretchy Nylon fabric. Its wide brim protects from sun and rain showers. The term broad spectrum refers to how wide of a wave length range the fabric protects you from.
A wide brimmed hat like this works in many kinds of use, regardless of whether you wear it primarily for the function of sun protection or as a fashion choice.
This product is free of PFAS compounds.