I have a 20'x30' U,S, polyester flag made by EDER FLAG CO. This flag has been flown but not too long as the fly end has just started to fray. I'm thinking it flew 3-5 months on a flagpole. It has never been repaired and could go up on a flagpole and I'm thinking the fly end would last about 3 months before it would need to be repaired. If you had the fly end repaired and that can be done a couple of times it could last a year or two depending on how you took care of it. This flag retails for $ 2,000.00 plus shipping and tax. So, if you have a flagpole that can fly this flag its a Bargen at what I'm selling it for.