Eminent storms won't be a problem with Columbia taking care of you. Bucket style hat. Seam-sealed construction provides unparalleled protection from the elements. Omni-Tech waterproof materials. Omni-Wick Advanced Evaporation technology moves and disperses sweat away from the body to keep you comfortable. Lightweight mesh lining. 100% Nylon. Imported. Measurements: ; Circumference: 23 in ; Brim: 2 1 4 in ; Product measurements were taken using size SM/MD (6 5/8-7). Please note that measurements may vary by size.