One 10.5 x 6 inch Cow 1st Birthday Boy Tall Centerpiece with assembly instructions. Add some sweet style to your tables with our Cow 1st Birthday Boy Tall Centerpiece. This centerpiece was designed by Moxzie, Inc. to coordinate with our Cow 1st Birthday Boy Party Supplies. The triangular piece is printed on all three sides, and set-up is quick and easy. Use your centerpiece alone, or pair it with our small centerpieces for a perfect matching set.