I used a medium flat rate box to send the one I sent to ladybug, we will have to ask her if it was very crumpled. At the post office they said it was ( very light) , waste of the flat rate cost, but that was the only Box I found deep enough to not crush it. I bet there is a ( parcel post box that would work & be less expensive.) I just didn't have time to ( shop around) for a box.