Beistle 57740 Tie-Dyed Pennant Banner. Make sure your totally rad 70’s party is complete with this colorful Tie-Dyed Pennant Banner! The Tie-Dyed Pennant Banner is made of a plastic all-weather material and can be used indoors and outdoors. There are 12 pennants per string. It is 10 Inch tall by 12 feet wide. Add a colorful look to any retro party celebration with this Tie Dye Pennant Banner. Whether you hang across a doorway, attach to a fence, attach it to a wall or even the front of a table, this retro pennant banner makes a groovy decoration!