A soft, shimmering blue brings a smile to your special occasion when you add these Light Blue Round Balloons to your party supplies. Each foil balloon measures about 18 inches across and ships uninflated, with a self-sealing closure upon inflation. For a fun twist, use a marker to draw silly faces or write special notes on these solid colored balloons! (Each) Solid Color Balloons, Round Balloons, Baby Blue Round Balloons. Solid Colors Party Decorations Baby Blue Foil Party Items, Balloons, A2Z Sold Mylar Rounds.