Princess Cruises has rolled out its new Princess Luxury Beds. More than 44,000 beds will be added to every stateroom through 2018, Princess Cruises reported in a December 15, 2015 release.

The custom bed has a two-inch thick pillow-top covering. The mattress is nine-inches thick and is constructed with individual coils to reduce movement in the bed when partners roll over or move around in their sleep.

Princess cruises worked with a sleep expert and a design expert to get the bed developed. Dr. Michael Breus, The Sleep Doctor, worked with Princess on the project. Breus has two best-selling books on the subject of sleep. Princess also worked with HGTV Designer Candice Olson. Olson has two HGTV shows, Candice Tells All and Divine Design.

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“We’re committed to ensuring that our guests come back from their cruise vacation feeling refreshed, rejuvenated and renewed,” said Jan Swartz, Princess Cruises‘ president. “With our guests’ overall wellness in mind, we’ve invested in the design and development of our new Princess Luxury Bed with leading experts in both the science of sleep and design to offer the most comfortable and rejuvenating sleep at sea.”