This 3 x 5 ft. Jolly Roger flag and sometimes called the Skull and Crossbones flag is 100% nylon, hand-sewn with two rows of stitching on top and bottom, four rows stitching on the fly end, finished with a canvas header and brass grommets. Our novelty fun flags are boat flags are perfect for boats, yachts, and more! Made in the U.S.A.!