21. Air mattresses use one or more air chambers instead of springs to provide support.22. The two slept on a decrepit air mattress that would deflate during the night. 23. It was empty of people except for one silver-haired man asleep on an air mattress . 24. Participants should bring a sleeping bag and air mattress . 25. Narrow hallways were lined with bedrolls and air mattresses . 26. Last year, a woman even paddled out in the cold water on an air mattress . 27. Actually, Long sleeps on an air mattress next to the washing machine in the basement. 28. Air mattresses were spread around the building in case students would try to jump down.29. I got a novel, put on a sweater, and promptly fell asleep on my air mattress . 30. One man brought a folding cot, and several had foam-rubber and air mattresses or sleeping bags.
