PEO-Soldier has been working on a new version of the venerable 5 Button Sweater. Designed in World War One, the 5-Button Sweater was manufactured from wool and offered in a brown color. Aside from the most minor of changes over the years, the sweater didn’t receive any modifications until the late 90s when the material was changed from wool to acrylic.
The most striking change is from Brown to Foliage Green to better blend in with the Army’s universal Camouflage Pattern. Also absent in the new version are the buttons which have been swapped out for a zipper with cloth pull. The new sweater is also reported to be inherently FR so they may have gone back to wool. However, they claim it is of “next to skin” quality so it may be of another material.