Fit Guide SM/MD: Hat Size: 6 7/8" – 7 1/4" Head Measurement: 21 7/8" - 23" LG/XL: Hat Size: 7 1/4" - 7 5/8" Head Measurement: 23" - 24" Benefits Water-resistant Abyss fabric. AIRTEX paneling for ventilation. Embroidered heat transfer burgee logo. Nylon drawcord with adjustable toggle. Hidden interior pocket. Insulated EVA brim for comfort and ease of wear. Details 80% Recycled Polyester / 20% Spandex. Hand wash. Hang dry. Imported. The Florence Airtex Boonie is a classic boonie reengineered through the lens of utilitarian performance innovation. Equipped with ventilated AIRTEX panels & water-resistant Abyss fabric, this brimmed hat is built for high-output expeditions. BUILT FOR: SAILING, HIKING, FISHING, EXPEDITIONS