Our FBI baseball cap is made up of thick, high quality embroidered lettering in white with gray embroidered outlines to make the letters really stand out. We asked for an extra FBI embroidered on the left bill. One size fits all hats will generally fit heads with a circumference of 21.5 inches to 23 inches or a medium/large. Velcroe closure on the back, black, 6 panels. $9.95.