Annex walls are made of 420d ripstop polyester oxford fabric, polyurethane coated for 2500mm waterproofing Annex floor is made of 550gsm pvc coated waterproof fabric with heavy duty weather resistant zipper The annex may be set up with or without the floor installed Adds over 42 square feet of downstairs living space to the pike rooftop tent Creates a convenient room for changing clothes, removing muddy boots, storing gear, cooking or lounging, or additional sleeping space Entry door and two large windows with mosquito netting and solid flaps. a "Back door" provides access to the vehicle's side door or truck bed