This is a part of the USGI ECWCS Gen III System.
The Level 4 Jacket is a light weight wind jacket and does not have a hood. Level 4 does not have a matching trouser, unlike Levels 5 and 6.
They are not water proof, offering light protection against wind and rain.
Jacket is brand new in the plastic, and still unworn.
NSN: 8415-01-580-0754
Jacket is Manufactured by Tennessee Apparel corporation.