Luxury tour operator Abercrombie & Kent will offer fully lie-flat seats on private jets from this autumn.
All airborne A&K adventures will use chartered Icelandair Boeing 757-200ER with 50 Italian leather seats, equipped with personal massage systems, adjustable headrests and lumbar supports.
The 6ft 5in long seats also offer guests more privacy with extra-high seat backs.
Travellers will be able to enjoy the in-flight experience on the Wonders of the World by Private Jet package, which drops in on Machu Picchu, Easter Island, Angkor Wat and Istanbul.
"I truly believe - in fact I built Abercrombie & Kent on the belief - that we can provide our guests with an unexpected level of comfort," said A&K founder and CEO Geoffrey Kent.
"So I'm thrilled that our guests will be the first to experience completely lie-flat, first class seats on our private jet journey around the world this fall."
The high-end travel firm has also now partnered with Abu Dhabi’s Royal Jet, which will offer Regal Rajasthan with Royal Jet and British Polo Day as its inaugural experience in December.
The trip will be limited to just 18 guests, who will be offered an exclusive tour of the Taj Mahal before jetting to Jodhpur for British Polo Day, hosted by His Highness Gaj Singh 11, the Maharajah of Marawar.
Guests can then explore Jodhpur with a private guide before visiting Udaipur and Mewar Palace.