From Levis

 MA1 style Flight  Jacket

In Navy Polyester

Based on cold weather Flight / Tanker Jackets favoured by the US Airforce

Thermore / thermal lining, ribbed waistband and cuffs

size is marked XL

Measurements are: 

Pit to pit across: 24.5" 

Shoulder to cuff: 26"

Collar to hem: 27"

In great, worn and well cared for condition. 

A Nice find!!