Protect Our Parks Flag3' x 5' "Protect Our Parks" flag with grommets and double stitched edges to reduce fraying. Our Design: Designed around the iconic shape of wilderness signage and on a base of forest green and silver, the colors of the National Parks guidon. Our flags are made from hand selected durable polyester (most flags you'll find on the internet are cheap thin fabrics that snag easily). In our testing, we selected our fabric as the perfect flag material