11.6 liters of helium film-balloon refill can Since it is intended to be refilled, it has a small amount of volume, so please use it for film-filled balloons. Not suitable for latex or uninflated balloons, special size or large size balloons. 3 balloons are required to inflate the balloons approximately 7.1 inches (18 cm) in diameter. When using, please check the amount of gas required for the balloon. For refilling aluminum balloons