Material: 100% Polyester
If you are into the outdoors then there really isn’t much more of a versatile cap on the market. Great for cycling (sweat repellent) , river adventures (it floats!), Hiking (it’s ventilated), traveling (it's packable into your pocket), mountain climbing (it has no fear of heights!). There really isn’t much in the way of activity, strenuous or otherwise, that this indomitable cap can’t take on.