Kits use metal and composite components—listings report an aluminum (aluminum alloy) pole together with fiberglass elements—and the banner itself is described as a heavy stretch fabric.
The total kit height is listed at about 16.3 ft (195.6 in) including the ground stake; the pole portion alone is noted at roughly 14.4 ft.
A typical kit includes the banner flag, the pole, and a ground stake, and many listings also include a portable storage bag; multi-kits commonly bundle 3 or 4 complete flag/pole/ground spike sets.
Flags are described as double-sided printed on thick stretch fabric to improve color saturation and contrast. At the listed height (about 16.3 ft total), they are sized for strong visibility outdoors.
The kits are designed for outdoor mounting and include a plug-in ground stake/ground spike to secure the pole in soil; the pole assembly is intended to be mounted using that spike for outdoor installation.
You can buy single-flag kits or multi-flag sets; listings show 1-flag kits as well as bundles containing 3 or 4 matching flags with poles and ground stakes.