M-1948 parka-shell and parka-liner.
The mitten inserts are intended to be worn under the trigger finger mitten shells.
The trigger finger mitten shells are to be worn with or without the wool/nylon mitten inserts and in areas too cold for leather gloves and not sufficiently cold for arctic mittens.
Military specification MIL-M-809 covers an ambidextrous, knitted, trigger finger, mitten insert.
Military specification MIL-M-810 covers one type of mitten shells with trigger finger.
Military specification MIL-P-10402 covers the M-1948 parka shell and liner.