We get lots of calls about our shipping sizes. Folks just can't imagine the massive size of a big comfy (Twin-to-King) mattress fitting (almost) in the trunk of a small car. Regardless of size, Your Haven comes safely packed in a 15"x15" box. When your ready to have the best night sleep. Just unwrap in minutes. No smells, Zero Off gassing. Try a Haven now always Shipped Free in Canada.