Rated 100 SPF / UPF 50+ 100% Polyester – Lightweight, high density yarn that is tightly woven to achieve maximum sun protection Adjustable adult hat – Will fit a head circumference measurement from 22 – 24 inches Mesh vents allow air circulation to help keep head cooler (Note: Mesh portion is not UPF rated) 4” brim in front and 8” drape in the back shades face, ears, and neck Shield your skin from damaging sun rays and the intense heat with Sun Protection Zone Adult Floppy Hat. This hat is rated 100 SPF / UPF 50+. This ultra-protective polyester hat is fully adjustable, with a 4” flexible front brim that covers eat-to ear and provides an extended 8'' back drape to block out the sun from reaching your neck area. Mesh vents allow air circulation to help keep head cooler. The toggle on the back adjusts the sizing and has an adjustable chin strap. The machine washable fabric is easy to maintain, allowing you to utilize it when you need it most.