The tubes.
Whenever you see something that needs that kind of question answered, its best to contact the company. When I see that design of air bladder (tube), its commonly a heavy cloth/nylon with a "rubberized" coating on the inside like the better air mattresses.
My comment was based on seeing how they designed them. What would concern me more then anything is, how do they hold up over 10 years. Water in the air will form acids over time and start to break down the inner coating. How long will it take? There's no way to answer that. If it was a $200 air mattress that seeped down after 10 years, I would be ok with it. 50K trailer where part of the tent structure is held up with an air bladder? Can I get parts in 10 years and how much will it cost me and what are my options if I cant get parts.