Search our Cal Poly Mustangs Flag Shop for Flags, Banners, and Pennants with Licensed Cal Poly Mustang logos and insignias. Featured flags for Cal Poly Mustangs include Football Flags, House Flags, 3x5 Flags, Banner Flags, Pennants and Cal Poly Mustangs Banners. All Cal Poly Mustangs Flags are approved by California Polytech and licensed by the NCAA. Find our Cal Poly Mustangs Flag selection below and click on any image or link for more details.