Wellington, New Zealand — Sleep on a long-haul flight in economy class has always been a fantasy for many travelers. Air New Zealand will soon offer a solution that involves climbing into a triple-tier bunk bed wearing special socks.

The airline will open bookings for four-hour stints in the Skynest sleep pods and says they will be the first lie-flat beds for budget air travelers. Fliers will get cozy with their fellow passengers, however, so crumbs, strong perfumes and bedsharing are forbidden.

The curtained berths will be available to economy and premium economy fliers on the airline's new Boeing 787-9 Dreamliner aircraft from November. The planes will service the Auckland to New York route, one of the world's longest commercial flights that currently leaves economy passengers sitting upright for a marathon 16 to 18 hours.

Instead, travelers will have the option of a pre-booked four-hour spot in a curtained pod, with costs starting from 495 New Zealand dollars ($291) on top of the price of their economy tickets. But use of the six pods, arranged in a triple-bunk style layout between cabins, will put fliers in close proximity to others, prompting the airline to publish etiquette notes.

No snacking, and other rules 

Passengers must refrain from snacking in the pods, which can't be used by children or any additional visitors.

"That means solo snoozes only please, no musical nests or tag-teaming," Air New Zealand's website says. For those worried about cleanliness, the airline assures travelers that the pillows, blankets and sheets supplied "are all refreshed" between four-hour naps.

Fliers are also required to change into specially provided socks to enter the pod, fasten their seatbelts over their blankets and forgo dousing themselves in any smelly "perfumes or potions." Passengers will be woken by a gentle change in lighting at the end of their four-hour stint in the bunk — or by a flight attendant, possibly less gently, if they don't rouse in time.

Each berth is about the length of a regular bed — 80 inches — but the pods don't leave headroom for sitting up and access "requires bending, kneeling, crawling, or climbing into the space," the aircraft's website says. The bunks are 25 inches wide at shoulder height, tapering to 16 inches at the foot of the beds.

Seats or couches that convert into beds in the sky aren't a new offering for business and first class travelers, but Air New Zealand believes its lie-flat bunks for economy travelers will be a world first.

The offering from New Zealand's national carrier is the latest from airlines seeking to sell seat upgrades and other add-ons to economy travelers. Air New Zealand first announced the economy beds were in development in 2020.

The airline has increased fares and cut some domestic flights from its schedule in response to increased jet fuel costs during the war in the Middle East. In March, it suspended its earnings outlook due to fuel price volatility and warned that more changes to its routes were possible.

But on one of its longest flights, travelers might finally get some shut-eye — although they should expect snoring, for which earplugs are provided, the airline said.

"Statistically, someone's going to do it," Air New Zealand's website reads. "It might be you."