This Mobile Centerpiece Happy Birthday, Multi Col is a perfect addition to any birthday celebration. The 18" foil decoration features multicolored spirals that explode from a shiny stem and end with colorful cutouts that shout "Happy Birthday". Easy to assemble and a great complement to any themed celebration, this popular item is sure to be a hit. Approximate Dimensions: 13 in x 13 in x 13.5 in. With one package of 1, you can make any birthday celebration extra special. Creative Converting has created the perfect birthday party decorations and accessories that will make your celebration one to remember.