The Marlin MT hat is made from a blend of lightweight Nylon & Cotton so it dries quickly, breathes exceptionally well & is durable. This comfortable sun hat is so light youll hardly notice youve got it on & it does a good job of keeping those nasty UV rays off your bonce. A neat brim shades your eyes, ears & neck & there is an adjustable drawcord to keep it secure or to adjust the fit. If youre wondering what the little poppered strap on the side is for, its a retaining strap for when the hat is rolled up, just like on a brolly. Micro Travel nylon & cotton fabric Adjustable drawcord Narrow brim Packable