North Dakota Bison Wincraft Vertical Banner. This Bison flag is 28" x 40" and made out of polyester for use outside or in. The flag features a bold team logo design so can be used as wall art in your man cave or the kid's room. The flag is single-sided, so it will not read correctly on the backside. The North Dakota State flag is machine washable for easy maintenance. The pole or hardware not included. Show your neighborhood which team you cheer for! Go Bison!! Officially licensed North Dakota State Bison fan gear.