SuperKnit Polyester combines excellent durability with low cost and an attractive appearance for an outstanding value. Nylon flags are made with heavyweight nylon and include a canvas header and 2 brass grommets for indoor or outdoor durability. Sewn polyester flags are the most durable option, but are heavier and require more wind to fly. They are also the most expensive. Choose the flag material that suits your needs and budget, then choose a size that fits your space. While you're here, pick up some Texas pins and gifts to complement your new flag.