Arrangement of seat units in a vehicle cabin

An aircraft cabin arrangement comprising a plurality of seat units, each seat unit comprising a primary seat and a secondary seat arranged facing one another, and a side extension arranged along one side of a space between the primary seat and the secondary seat;

• wherein the primary seat, the secondary seat, and the side extension are configured to combine into a single bed position for the seat unit having a surface area that is greater than 4000 square inches;
• and
• wherein the plurality of seat units are arranged in two columns separated by a wide central aisle.

A aircraft cabin arrangement comprising:

• a plurality of seat units, each seat unit comprising a primary seat and a secondary seat arranged facing one another, wherein the primary seat and the secondary seat are configured to combine into a single bed position for the seat unit, wherein the plurality of seat units are arranged in two columns separated by a wide central aisle;
• and
• a wellbeing zone comprising an air supply comprising an enriched oxygen and moisture content, as compared to an oxygen and moisture content of the air supply to surrounding areas of the aircraft cabin.