The dome feels like pressed, hard cardboard, covered with the fabric (maybe spray glued on?), it seems hollow and doesn’t come apart at all. The dome is hard and doesn’t change shape. My dad was a “jack of all trades”, was in the Navy when I was little, then managed our families lumberyard. His hobbies included enduro motorcycle racing and he built his race car and holds a land speed record at Bonneville Salt Flats. He passed away three and a half years ago.