US Flag Store's Polyester American Flags are made from 2-ply polyester fabric, the most durable flag material available. While heavier than nylon flags, our polyester flags have an open weave which reduces wind resistance, lessens abrasion and provides for longer wear and improved flyability. Designed for daily year round use, our 2-ply polyester flags are intended for consumers whose number one priority is a flag that outlasts all others. Made in America, our 30ft x 60ft flag has these quality features: appliqued stars for a beautiful star field, lock stitched stripes, fly hems with zig zag stitching on top of multiple rows of lock stitching and a poly-duck header finished with solid brass rust resistant grommets.