US Navy :: Type N-4

JACKET - Field Type N-4 U.S. Navy

100% cotton poplin weave
100% melton wool in correct khaki shade
100% wool as per lining
Original wartime new-old-stock Conmar
Mil-spec. Urea
Mil-spec. reproduction
36 - 46. Sizing comes up reasonably snug - most will find the size they would normally wear is appropriate though. To give a better idea of how these fit, please see the model in the picture gallery associated to this product page by clicking the jacket image here. Scroll down to nearly the bottom of the gallery. The model is a size 40 and so is the jacket.

Introduced during WWII the N-4 was an intermediate weight ‘field jacket’ that was the U.S. Navy’s counter-part to the U.S. Army’s M-41. Primarily it was designed for units that would be operating on shore, such as beach battalions and units like the famous 'Seabees', hence it’s army-like olive-drab shade of green for land camouflage.

Whilst the US Army M-41 was soon superseded by an altogether heavier duty combat jacket - due to the somewhat harsher conditions of demanding combat activities - the N-4 proved to be more appropriate for the US Navy as it continued to be produced and utilised after the war, and into the ’50’s

The practicality of the N-4 is that it is light, yet warm. The shell is made from a light but strong weave poplin cotton, and the lining is 100% melton wool. The neat and trim fitting cut is very contemporary and stylish, which means it suits every day casual wear even today.

Although a seemingly simple garment to produce the N-4 is difficult to get right if one wants to really capture the look and feel like the wartime originals. This is due to the very fine weave quality of the materials. Producing an authentic recreation of this model has been a mission of ours for many years and that goal has now come to fruition.

We have taken particular care to get everything right. Constructed in Japan by the masters of vintage recreations, the poplin shell has the right density and mappy feel of the originals. The custom-made lining was produced in the UK to our specification and shipped to Japan, and to finish off the product we sourced new-old-stock wartime Conmar zippers for the front closure. The tailored cut of the original design has also been captured beautifully, giving you the finest recreation of an N-4 that has ever been produced.


Customer Size Guide

Jackets and Tops

Measure your chest over a T-shirt; it is helpful to get someone to do this for you. Do not inflate your lungs, just relax and stand with your arms out. The tape measure should be run around your chest right up under your arms and held snug, but not tight - this is your chest measurement.

Measure your chest The Size you
should order
in cm
34-36 86-91 36 XS
36-38 91-96 38 S
38-40 96-101 40 M
40-42 101-106 42 M
42-44 106-111 44 L
44-46 111-116 46 L
46-48 116-121 48 XL


Measure the circumference of your hand around your 4 knuckles (obviously do not include your thumb). Correlate this measurement with size chart below to assess your glove size.

Measure of your knuckles The Size you
should order
in cm
7 - 8 18 - 20 XS
8 - 9 20 - 23 S
9 - 10 23 - 25 M
10 - 11 25 - 28 L
11 - 12 28 - 30 XL


Measure the circumference of your head.

Measure of your head The Size you
should order
in cm
21½ - 22 54 - 55.5 XS
22 - 22½ 55.5 - 57 S
22½ - 23 57 - 58.5 M
23 - 23½ 58.5 - 60 L
23½ - 24 60 - 61.5 XL
Close Size Information