3dRose fl_163842_1 Keep Calm its My 21st Birthday. Happy 21st Birthday. Black Garden Flag, 12 by 18-Inch Overall dimension (in inches): 12 x 18; image size (in inches): 10 x 10 Made of 100% single-ply semi-opaque polyester Image is printed on one side, with a lighter image visible on the backside Suitable for hanging from a flag pole (8mm in diameter), on a wall, ceiling, banisters or doors Hanging hardware/pole not included