Durable, insulating honeycomb aluminum panels. Breathable, blackout, 300gsm poly-cotton canvas. Waterproof polyester 75d ripstop w/ eco-friendly (dwr) coating. 9-zone, 2.25 thick, insulated polyfoam. Double-layered fiber-reinforced plastic (frp) with 1 air insulation. 13.5 / 48. 82 ” x 51 ” (29.4 sq ft).