If you want more room to nap during your flight, you may have to join your suitcase.

Plane manufacturer Airbus, along with cabin makers Zodiac Aerospace, is developing full-size, lay-flat beds for economy flyers, Wired reports.

Here’s the catch: The luxurious beds will be located in the cargo hold of the plane. And you’ll probably still have to pay to sleep there.

The beds, which Airbus calls “passenger modules,” will be shaped like cargo containers. The windowless nooks will stack two high, bunk bed style.

Passengers would still have to stay in their seats during takeoff and landing for safety reasons, the company said. But they envision that the nap compartments would be available in shifts during long flights, and that flight attendants would change the bedding between naps.

Airbus says it could offer the pods in new planes by next year.