What are Hot Air Balloons made of?

The Balloon "Envelope" of the big bag on top !  are made of rip-stop nylon supported on an air-frame of wires and high grade webbings and brought together at the top with a "crown ring" holding it all in place
The hot air balloon basket is generally made of high grade woven wicker around a stainless steel aviation grade frame and a wooden floor,  Kevlar can be used also in tough environments like Africa