MA-2 bomber jacket

The MA-2 bomber jacket (also known as the MA-2 flight jacket or CWU-45 flight jacket) is an advanced version derived of the original MA-1 bomber jacket that was originally designed for the American military during the 1950s. CWU stands for "Cold Weather Uniform."

The term MA-2 was a trademark of the Cobles Clothing Company, adopted in the late 1980s when the CWU-45 military jacket started to gain popularity in street fashion. The term MA-2 has become so popular it is now used interchangeably with CWU-45 to represent this type of jacket.

There is also a lightweight version of this jacket, referred to as CWU-36.

The MA-2 has several design changes compared to an MA-1;

...
Wikipedia