Measured 11.81''*11.81''*5.91'', made of polyester. Soft Fabrics keep sweat and hair out of your eyes. Extra flap arrow in the back can fits most heads and also protect your neck from sunburn. Great for biking, running or wearing under a helmet. Available in green,purple,black,white,red,royal blue,gray,orange.Customize your logo or brand name on the front to boost your brand awareness!