To measure your head size get a soft tape measure. Measure around your head above your ears and eyebrows where your hat would normally sit. If your head size falls between two sizes, we recommend that you choose the larger size of the two. If you like loose fit, then please adjust the soft measuring tape in a loose way. Cap style: Vintage Motorcycle Details: leather peak, ventilation eyelets Lining: viscose ; Sweatband: leather Fabric: 100% waxed cotton / leather A vintage Harley style motorcycle hat made of weatherproof waxed cotton from the greatest British Millerain. Waxed cotton is not only very breathable, but also has exceptional weather-resistant properties. Thanks to a special blend of waxes, it has a drier feel than common waxed fabrics and is waterproof. British Millerain was established in 1880, since then it became a pioneer of waxed cotton. Pure cotton fabric and small ventilation eyelets on the sides make this headgear a very breathable and lightweight one. Above the leather visor there is a decorative leather strap, attached with 2 decorative buttons. Inside the crown there is a viscose lining and a leather