The Pipeline is made of handwoven Mexican palm straw. The band is a thin strand of supple rich-colored leather, wrapped twice and dropping into a chin strap bound by a simple wooden bead. It features a moisture-wicking, padded sweatband for comfort, and is fully adjustable to fit your head perfectly. HAT SIZE CHART 55 57 59 61 63 Size S M L XL XXL Inches 21 1/2" 22 1/4" 23 23 7/8" 24 5/8" Fitted Size 6 7/8 7 1/4 7 1/2 7 5/8 7 7/8