5.11 Boonie Hat is made of a lightweight, yet durable poly/cotton TDU ripstop fabric with a Teflon finish and features ventilation eyelets and a wicking sweatband to help you keep a cool head as the heat index rises. There’s even a hidden pocket with overlapping layers at the Boonie’s interior crown. The 5.11 Always Be Ready tagline is woven into the inside center seam. Making the intelligent gear you need to stay as comfortable as possible, you can count on 5.11.