Gym Windless Stay-Open Feather Swooper Flag Banner Kit: 15' Fusion Pole Set, Heavy Duty Ground Stake Our X Series 11.5 ' feather flag is made of durable polyester knit ensuring vibrant, eye catching color. The image is 100% dyed through, singled sided (back side reversed) and will remain open and visible without wind. Heavy duty aluminum pole base keeps the straight portion of the flag rigid for better look and performance.. Industrial strength fiberglass pole top ensures flag will remain open and visible without wind. Steel ground stake is galvanized for longer life.