All our G-Spec flag products are identical to those the US Government has specified. G-Spec items are made in accordance with US Code, Title 4. Feature include nylon high tenacity, industrial strength 70 denier light weight nylon, lock-stitch seams, material and color matched thread, 2-ply mercerized cotton bunting, heavy canvas duck heading, and # 2 rolled rim solid brass toothed grommets. All these 1st Navy Jack (Don't Tread On Me) flags are official government size (1:1.9) host fly ratio.