This Southern plains shield which measures 22 inches across is Comanche and made of peccary hide.
The Comanches made shields padded with all sorts of materials such as leather, book pages, or, in this example, grass. Perhaps they developed this practice from contact with Mexicans who sometimes wore padded or quilted armor or wrapped folded serapes around their abdomens to help stop arrows. The shield, which is over an inch thick but fairly light, is decorated with a half -circle outline in red that may be a rising sun.
Illustrated in Spirits in the Art, by James A. Hanson pg.20.