Adult Fred Flintstone Costume. The Adult Fred Flintstone Costume is a yabba-dabba-doo fun Halloween costume! Meet the Flintstones this Halloween when you become one yourself! Our Fred Flintstone costume will make you the ruler of your own domain. This adult Fred Flintstone costume includes tunic and tie. Sizing: This costume comes in Standard (jacket sizes up to 44) and XL (jacket sizes 44 - 46). Availability: This Adult Fred Flintstone Costume takes approximately 1 business day to leave the warehouse plus transit time.... - Adult Fred Flintstone Costume. | 
