This 16.5' shark flag is intended for display Indoors on any concrete or other hard surfaces using the black X-base. The banner design is customized to your graphic artwork and is printed on a polyester mesh by the process of dye sublimation. Our inks heavily saturate the material to create a "bleed-through" effect for our single-sided displays such as this one. Black flag trim is sewn on the edge of the graphic (pole-side), leaving a pocket for the pole insertion. A set of grommets are installed on the bottom of the trim in which the short bungee cord (included) can loop through and snugly attach the graphic to the base.