We’ve made our Martha Sun Cap from lightweight, recycled, windproof fabric with a PFC-free DWR (Durable Water Repellent) finish to block out the wind and even shrug off light showers. In a six-panel construction with an elasticated band at the back and flatlock seams the fit is outstanding. A sweatband inside wicks moisture effectively and the flexible visor shields your face yet packs down small inside a backpack. For sunny days covering some distance on the trail, this cap feels great and looks great too. With a ponytail loop on the back.