The middle jacket is single breasted, the suit on the right side in the picture is double breasted. From the display windows of the Sartoria Rossi in Florence in Italy. November 2018.
NEVER take off your suit jacket. This is the golden rule always re-iterated by the famed Andy Gilchrist of aksandyaboutclothes.com.
Exception: diving to save someone from drowning.
Suits denote responsibility and professionality, see Giorgio Armani, Link------------------------------------------->