Air Berlin, Vueling, Swiss and Wizz Air Take advantage of fuel savings with the new A320's .Sharklets are newly designed wing-tip devices that improve the aircraft’s aerodynamics and significantly cut the airline’s fuel burn and emissions by four per cent on longer sectors. Sharklets are an option on new-build A320 Family aircraft, and standard on all members of the NEO Family. They offer the flexibility to A320 Family operators of either adding around 100 nautical miles more range or allowing an increased payload capability of up to 450 kilograms.