The author plans to buy a camper van in 2029 and will first rent a Toyota HiAce-based camper van for three nights and four days in early November. While preparing, he focused on night-time cold, heating and sleeping bags, but did not compare the bed length with his own height. Reports of back pain and cramped sleeping from other campers prompted the check. Before renting, he intends to ask the hire company where the sleeping area is, its length and width, and whether wall or storage protrusions affect the head and foot space.