American Airlines announced that it is partnering with innovative global sleep company Casper to offer a best-in-class sleep experience to American Airlines customers.

Beginning in December, customers seated in long-haul international and transcontinental First or Business class and Premium Economy can enjoy a suite of advanced sleep offerings designed by Casper's award-winning engineering team. The Casper line of sleep products will include a mattress pad, duvet, pillow, day blanket, lumbar pillow, pajamas and slippers, with the exact offering varying based on the route.

Casper studied the travel environment for months to better understand the challenges of in-flight sleep. Casper's sleep engineers then applied their renowned expertise in sleep research and sleep science to design innovative products specifically for air travel and made exclusively for American Airlines.

Casper researched more than a dozen versions of the onboard pillow and tested it with a variety of fibers to find the perfect balance of support and breathability for customers. Inspired by performance outerwear, Casper's signature duvet and the onboard duvet are created to provide comfort at all altitudes, and its sewn-through seams create small, rectangular chambers for a consistent fill distribution to stay fluffy and in place.

American put these designs to the test with customers on some of its longest flights, including Los Angeles to Auckland, New Zealand. The airline also tapped the expertise of some of its most frequent travelers, its flight attendants, for advice on fit, durability and comfort.

"Customers and crew members who tried Casper on our flights said they loved it," said Kurt Stache, American Airlines senior vice president for Marketing, Loyalty & Sales. "Casper has set a new standard for premium sleep products and our new line showcases their attention to detail and design, and their commitment to providing the best rest possible for American Airlines customers."

Casper was founded in 2014 with the mission of improving sleep and modernizing the mattress industry. This is the first time Casper has applied its sleep expertise beyond the home to the world of travel.

"Our mission has always been to create products that help people dream their way to a better life," said Philip Krim, Casper co-founder and CEO. "In collaboration with American, we are now able to apply our expertise in sleep science to redefine comfort and sleep in flight."

Casper products will be available on these select routes in addition to traditional long-haul international and transcontinental routes:

 Boston (BOS) - Los Angeles (LAX)

 New York's John F. Kennedy (JFK) - Seattle (SEA)

 Miami (MIA) - Seattle (SEA)

 Miami (MIA) - San Francisco (SFO)

 U.S. to Hawaii

 U.S. to Northern Rim of South America (MAR, MAO, BOG, CCS, CLO, GYE, LPB, MDE, UIO, VVI)

Contributed by American Airlines