Korean Blow Up Mattress?

As you may or may not know, in Korea they use heated floors instead of a furnace. As a result, most of life happens on the floor: eating, sleeping, entertaining--really, what else is there? I'm watching TV (shocking!) and I swear there's an ad that looks EXACTLY like a blow up mattress commercial!! You know the one that's like, yeah, you can blow it up in minutes and have a spare room! Your kids will love being on it when they don't have to be sleeping, even, just playing their Nintendo DS! Except it's for an additional heating panel. It's so weird!