This 3 x 5 ft. US Army Corps of Engineer Safety flag is printed on 100% nylon with vibrant color fast dye, specially treated to minimize the sun's deteriorating rays. Hand stitched with two rows on top and bottom, four rows of stitching on the fly end. Finished with a heavy-duty 2 in. canvas header and large brass grommets, Our flags are made in the U.S.A. to governments design specifications.