One 13 x 19 inch Oh Boy 1st Birthday Party Poster. This poster is printed on high-quality satin sheen paper and was designed to coordinate with our Mickey Mouse 1st Birthday Party Supplies. Place your Oh Boy 1st Birthday Party Poster on the wall behind the food table. Let guests know where the party house is by fastening one of these friendly signs to your front door. Or try attaching Oh Boy 1st Birthday Party Posters to wooden dowels and placing them in your yard for a unique display!