How big is it when packed?
3 foot long bag about 8 inches round. The cross members are 3 sections, like tent rods with the elastic rope in the middle holding them together. When they are together, it's 9 feet long. And because the cross members slide in holes in the "trusses" the uprights can be as close or as far apart from each other, accomidating any picnic table size. Ours at home are 4 feet. We have 2 of them. Last week we had a 5 foot table at the campsite, this week, a 6 foot. It works well on any of them.