Delta Air Lines has introduced what they call the world's first all-suite business class, with suites featuring sliding doors that enclose fliers in their own little cubicle.

The airline introduced their Delta One suite this week, touting it as a first for business class travel.

Individual suites with sliding doors already exist at Singapore Airlines for fliers who opt for the highest-tiered ticket. Likewise, First Class cabins on Emirates also boast individual suites with privacy sliding doors.

The new feature is meant to appeal to business fliers who may need to catch up on sleep before alighting for a big meeting upon arrival, or those who wish to be undisturbed throughout the flight.

The Delta One suites will make their debut on the A350, due to enter service next fall, and will feature 32 individual suites. Delta will be the first US airline to take delivery of the A350 which will primarily serve routes between the US and Asia.

Along with lie-flat beds, the suites will have customisable ambient lighting, stowage compartments for shoes, headphones and laptops, an 18-inch high-resolution monitor, and universal power outlet and USB port.

Following the A350 debut, the Delta One suite will be rolled out on the carrier's Boeing 777 fleet.

Delta's business class suites are meant to rival United Airlines' recently announced business class Polaris cabin, featuring flatbeds, electronic dividers, and luxury bedding by Saks Fifth Avenue, which will debut December 1.

While we're on the topic of business class, we can't get enough of Cathay Pacific's new business class lounge in HKIA.