I toured the world’s first Airbus A321XLR business class. The lie-flat seats lack one popular feature — but are easy to love anyway.

• Iberia launched the first long-haul Airbus A321XLR flight from Madrid to Boston on November 14.
• It’s the world’s first example of lie-flat business class on the highly anticipated new jet.
• The seats don’t have a door or an extra-large front row, but I don’t think either is necessary.

Spanish flag carrier Iberia launched the first long-haul Airbus A321XLR flight on November 14, flying seven hours from Madrid to Boston.

The new Airbus narrow-body looks like its A321neoLR predecessor but can fly about 800 miles further thanks to an extra fuel tank in the belly, extending the aircraft’s range 11 hours nonstop.

This plane is poised to open new routes for airlines they couldn’t previously reach — or couldn’t profitably fly with a wide-body.

Because the A321XLR will likely fly long-haul, many airlines plan to fit them with lie-flat business class to optimize comfort and choice.

Business Insider toured Iberia’s A321XLR in Boston after its inaugural flight to see the industry’s first example of these new premium narrow-body cabins.

It almost mirrors JetBlue Airways’ Mint business class, minus two key features some passengers may miss — but I don’t think Iberia needs either of them.