NEOPlex 3' x 5' Medical Marijuana Novelty Flag by NEOPlex. $1.91. This 3 x 5 foot novelty message flag is made from super polyester that is durable, yet lightweight enough to fly in even the lightest breeze. It has 2 brass grommets firmly attached to heavy canvas on the inner fly side. Bright, vivid colors and colorfast to reduce fading. Many titles to choose from.. Save 90%!