Nylon
US nylon Flags have a DuPont Solarmax coating. It is the longest lasting, fade resistant nylonavailable. With a combination of strength, brilliance and quick drying ability, it is suitable for a wide range of applications. Great in many areas, its light-weight and tight weave enable it to fly in the slightest breeze, giving the fullest visual effect.
G-Spec Nylon
The G-Spec line of flags are identical to those that the U.S. Government has specified. Exclusive Perma-Nyl industrial strength 70 denier lightweight nylon, Lock-stitched seams, material and color matched thread. Heavy duty canvas heading and official Government size (1:1.9) host fly ratio. The sizes of these flags may seem a little unusual, but they are made to the "official" dimensions.
Polyester
Made of 100% spun polyester, its 2x2 ply construction combines durability, strength and a deeper red than the nylon. The 2ply poly is very similar in appearance to a cotton flag but much more durable. It does take more wind to get it to fly than a nylon flag, but it should provide extra life in windy areas.
Reinforced Nylon
US Nylon Flags that have a reinforced fly end for longer life. Horizontal zigzag stitching and vertical zigzag stitching on the stripes at the bottom of the fly end help extend the life of a nylon flag without diminishing its ability to unfurl.
Cotton
For many years cotton was the standard for flag fabric. With the introduction of Nylon and polyester, cotton has taken a back seat to the more durable fabrics. We do not recommend cotton for extended exposure to the elements, however, for a traditional look or occaisional use, it may fit your needs.