Air Berlin passengers flying long-haul will soon have the option of paying an additional €79.99 for an "XL" economy seat.
The carrier said 40 XL seats, which offer an extra 15 cms of legroom, are being fitted on each aircraft in its A330 long-haul fleet.
Occupying five rows of 2-4-2 seating, the XL seats are identified by their red headrests.
The seating will be completely installed by December 1 and passengers can book XL seats for flights from that date. The €79.99 fee is per single journey.
Members of Air Berlin's Topbonus frequent flyer programme can spend 10,000 miles to book an XL seat until December 31, for travel at any time.
For Gold and Platinum members travelling in economy, an XL seat is included free of charge.
Thomas Ney, Air Berlin's senior vice president of hospitality and operations, said: "With the new XL seats, Air Berlin is expanding its customer-oriented service and product portfolio on long-haul routes.
"We're delighted to now offer our passengers on long-haul flights even more comfort, thus further improving our Economy Class for our customers."
Last month, Topbonus teamed up with 15 retail websites, including Amazon and Ebay, to reward members with miles when shopping online (see news, August 19).