insight: travelling, especially backpacking takes a lot of effort. Carrying a 20kg backpack on your shoulders while hiking up the mountain is not easy. More than that, hikers also have to carry a tent and a sleeping bag and -pad on their backs.
The traveller is intended to be a fast deploying, light overnight shelter. The material for the inner structure of the building is air. And this is everywhere around us, as well as very cheap to get and very light. The way of getting it in the tent structure is with a hand- or foot pump or simply by pure lung power.