A Malaysian airline has designated adults-only "quiet zones" on its planes to keep passengers from being disturbed by loud babies and toddlers.

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Air Asia X said its five-times-a-week flights from Australia's Gold Coast to Kuala Lumpur now have "quiet zones" in seven rows of economy class reserved exclusively for passengers over age 12, the Brisbane (Australia) Courier-Mail reported Friday.

Tickets for the quiet zone cost an extra $15 for the 6-hour flights.

"It is important to emphasize that we are a very family friendly airline and welcome all passengers," an airline spokesman said. "It's a seating innovation introduced to provide greater choice for guests. The quiet zone seating area comprises 63 seats out of a total seating capacity of 377, so it only applies to a small section of the aircraft. There's plenty of room for families with children."