To attain your proper head-size, wrap a soft tape measure around your head, (across the middle of your forehead) and measure the circumference. An average head-size for a woman is 22" to 22.5" and for a man 23" to 23.5". We suggest leaving a fingers width of room in when you measure for comfort.
During the check-out process, a box will come up asking you to choose your head size and you can specify this information for us then.
Of course, we can make your hat in any size so if you don't see your size listed, write it into the comments section at checkout and we will be sure to get you the perfect fit.