Each balloon swag is created with an 11" latex balloon with 5" accent balloons between them. We must be able to rig the balloons from a balcony or magnetic metal. Please email a picture of the ceiling to firstname.lastname@example.org. We do not attach anything to the walls. We can fill these with helium, so they float up into arches, they are more expensive, but the air-filled ones last for weeks inside. Be sure to let us know what colors you want. This decor should only be used with very high ceilings.