These fabulous helium balloons are a great way to bring a sense of occasion to any special birthday. These balloons are 18" Diameter and are perfect for any big surprise event. If you order more than one we will contact you so see if you would prefer them made up into a cluster or arrangement.All our Helium balloons come ready to display, pre inflated with beautiful ribbons and weights and can be delivered to your door (or someone else’s). We can offer a store click and collect service for these balloons or we can only offer a next day delievry service if ordered before 10:00 am, if not our standard service is 48hrsHelium Foil Balloons Top Tip: These balloons may shrink in cold air, however they will firm up again once at room temperature. Material: Helium filled foil balloonsSize: Balloon 18? Diameter