Travelers say Qatar Airways has the best business class, thanks to its QSuite with sliding doors and double beds: See inside

Qatar revolutionized premium flying when it introduced its famous QSuite, its first suite-style business class with fully closing doors. Several cabin layouts are possible, too, including first-of-its-kind double beds and quad-seating.

QSuite was an industry-changing design that raised the bar for premium seating worldwide.

Other airlines, like Air India and British Airways, have since adopted their own hotel-like cabins and multi-person seats.

Still, it appears travelers prefer the original — and Qatar is evolving it even further with the unveiling of its “QSuite 2.0” later this year.