Cotton,Polyester Imported TravisMathew Accessories Size Chart Keep the sun out of your eyes before you fire up the BBQ with the TravisMathew? Grillin Hat. Large brand patch at front. Pre-curved bill. Classic six-panel construction. Mesh backing for increased ventilation. Snap-back adjustable closure. 63% polyester, 34% cotton, 3% polyurethane. Spot clean. Imported. Measurements: Circumference: 21 1?4 in Brim: 2 1?2 in Product measurements were taken using size SM/MD. Please note that measurements may vary by size.