Retail Store Supply String Pennants - The Big Sale 60' pennants are one sided. Get your customers attention with a string of colorful pennants. Use them indoors or out. Our string flag pennants come in 2 sizes 60' and 120''. We have multi color,red yellow, American flag (patriotic), blue silver, big sale, and grand opening. Retail Merchandising Signs LLC string pennants are proudly manufactured for us in the USA. Price breaks are at 5 and 10 of string pennants.