. There are two types of flags; Swooper Flutter and Swooper Windless (require Our Swooper Windless flags have a full sleeve. The full sleeve allows the flag to remain open, constantly displaying the message. Flags are made of a heavy duty knitted polyester material and are printed with 75% to 90% bleed through on the reverse side; this means the reverse side has a mirrored image. The two types of flags require different flag poles as they are shaped differently at the top. Poles are sold separately. PLEASE NOTE: IF YOU CURRENTLY OWN A FLAGPOLE MAKE SURE YOU PURCHASE THE MATCHING FLAG. FLAG WILL NOT DISPLAY CORRECTLY IF FLAG AND FLAGPOLE DO NOT MATCH.