The M-1965 field jacket can be combined with a button-in insulated lining for cold-weather wear, original ones were produced by the government contractor Gibraltar Co., as well as the button on fur trimmed M51 winter parka hood. Note that only genuine Milspec M65 field coats can button on the winter hoods made for the M51 parka. It was made by Alpha Industries, and John Ownbey Co., Inc. as well as other companies like Propper, Golden Manufacturing, Sportsmaster Inc. and many more, for the military .The olive drab M-1965 Field Coat (commonly called the M-65 Field Jacket) was issued until late 1980s. 

The M-65 Jacket liner is sold separately when available for $29.95 used.