Panama Hat by Furtalk. Fedora Style Straw Beach Hat with UV protection For Women or Men. Wide Brim Breathable Straw which makes it light weight and flexible. Tight braiding ensures durability and shape. UPF 50+ Sunshade. Full Brim measures 2.75-3.15 inches (7-8 cm). Medium Hat fits head circumference 22 inches - 23 1/3 inches. Adjustments are available with hook and loop strip under hat band inside of hat. Instructions for adjustment also available inside hat (see label pic)