No bat signal? No worries. We've got something much better. Let the people in your neighborhood, the drivers passing by your house, the Spanish armada, everybody, know you're in cahoots with the greatest. Fly your flag high and watch the party trickle in.

PRODUCT DETAILS

• Hand-sewn
• Reinforced header and grommets
• Material: 100% polyester
• Dimensions: 3' W x 5' L