Add that extra shine to your birthday decorations with these Happy B-day Foil Letter Balloons! These Birthday Foil Balloons with their unique shapes & sizes are indispensable for any birthday celebration. These self-sealing, reusable balloons can be filled with helium (to make them float) or air. Tape these letter balloon banners to the wall or use them as unique photo props. Dimension – W:59cm x H:90cm & W:48cm x H:91cm.