Banner World Undertakes Large Crowd Flag for Pride in London 2017. This monster of a flag measures 50m x 5m (164 feet x 16.5 feet). The design was printed using a dye sublimation process. The material used was a lightweight knitted polyester 115gsm. We then finished the flag by stitching a durable hem around the outer and inserting rope handles in the corners and then 2m apart around the edges. The flag was the main centre piece of the event and as you can see by the pictures this large format crowd flag looks absolutely stunning.