Southwest Airlines (NYSE:LUV) is adding wider seats to its airplanes.

Each seat will have an additional half-inch of width. These were showcased at the Aircraft Interiors Expo in Hamburg, Germany.

The move will make the seats of Southwest Airlines’ Boeing 737s wider than other airlines’ 737s. B/E Aerospace Inc. worked with the company to design the seats.

Fuel consumption will be reduced by the new seats, which will reduce the total weight of each plane by about 200 pounds.

The Southwest seats will be available by mid-2016. They will be available on the new Boeing 737-800s and the Boeing 737 Max, slated for a mid-2017 release.

LUV stock is down 0.9% Tuesday.

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