Celebrate with fun balloons 2 number balloons each measuring 26? 2 phrase balloons, each measuring 9? Air inflation only (supplied uninflated) Say it with balloons! Mark a milestone birthday with this set of gold and silver balloons. The two 9 ? phrase balloons spell out happy b-day with two 26 ? number balloons to mark the special age. These balloons are suitable for air inflation only and come with a straw for easy inflation.