Please note that the balloon will not arrive in the frame as you will need to remove the covering from the Perspex then flip the backing paper round and slide the balloon in. It's very simple to do and means there is less chance of damage in transit. Each balloon will also come with an official Dismaland ticket which will be emailed to you. The framed balloon will arrive perfectly packed and all you need to do is remove the outer protective coating from the perspex.
The measurements of the balloons are approximately 29 inches long by 23 inches wide when flat. The little tab where you inflate with helium is two inches long.