This is the 1/2" hole variation of the US M-1 Helmet net. This particular model is 100% cotton, OD #7 in colour, and has 1/2" spacings. This M-1 helmet net has a draw string and is easily tucked between the M-1 helmet shell and liner. This style of helmet covering saw wide use by both infantry, airborne and support units and can be referenced as the style used in the film BAND OF BROTHERS.
* Helmet in picture is not included