Nylon American Flags. All American flags are manufactured in the USA from the highest quality flag material and conform to FMAA requirements. To obtain additional information, inquire about flag installation or recieve assistance with proper flag size please contact our office directly 972-607-0958. Nylon material is the highest quality flag material not to mention the strongest and most economical. The colors are very brilliant on nylon flags. If the flag will be left on the flagpole 24 hours a day nylon material is recommended.