The 12"x18" Multi-Colored Pennant Strings create a festive atmosphere as well as flutter with the slightest breeze. You will see pennant strings commonly at car dealerships and festivals because their goal is to draw an audience by creating a sensational, fun atmosphere. Pennant strings are inexpensive and create a lot of visual stimulation for their expense. If you haven't tried pennant strings, test them versus other marketing initiatives and see for yourself how they perform. These pennant strings are made with 4-mil Polyethylene material and come in 4 lengths and 15 styles to suit your needs.