The thin Red Line is a symbol of respect and support of our Firefigthers; show your supprt with Thin Red Line Flag Hat. the low profile cap is constructed of durable 100% brushed Cotton twill with an embroidered flag on the front. The cap also features hook and loop closure for the perfect fit and an inner sweatband. This hat would make a great gift. One size fits all. Adjustable hook and loop closure. High Quality embroidery.