Create the perfect balloon display using our Helium Balloon Tank! This helium tank contains 15 liters of helium gas, so you'll have enough to inflate up to 30 balloons (9 inch) for your birthday bash. For best results, fill your balloons one to two hours before your event starts - and be careful not to over-inflate! Find more ways to add fun style to your celebration by shopping the rest of our birthday party supplies. BR>This item is available in Toys R Us Canada Stores and is not available for Home Delivery.