We currently do not launch holiday prints in 6' x 9' sizes right now. Since we are still a small shop and we want to be able to provide multiple seasonal options for our customers, ordering a single size keeps costs lower (for us AND YOU!)
If you want to use the holiday mailer to ship smaller packages, simply fold the 10' x 13' down (almost in half) further and adhere to get close to the 6' x 9' size. Many of our customers do this and we personally do this every day for our smaller orders!