NYL-GLO ColorFast U.S. Flag are the best in the business. These nylon flags have the best resistance to damaging ultraviolet radiation. It’s the longest lasting nylon available and it still flies in the lightest breeze. They have hand-fitted, double-needle seams with back-stitch reinforcement. Two rows of stitching are included on top and bottom hems. Flags made with premium-quality, extra-strength polyester thread, color matched to stripes on the front and the back, four rows of lock stitching with back-stitch reinforcements and large, full size _dense-filled embroideredî stars on sizes through 12 x 18.