I was issued one in the OP's back in 99, I have since carried it around with me, still in the wrapper since then. Back in September, I decided to actually use the thing, so I cut it to a million pieces and put it on my helmet as scrim. Now my helmet looks pretty swanky and doesn't get heavy from absorbing water in the rain. Plus my headlamp now resided permanently on my helmet but is completely covered by the net hanging down. Finally, this stuff doesn't disintegrate like hessian and burlap, so there is never a ton of material falling down your shirt, getting in your eyes, mouth, or any other orifice. I have used these things as the front cover of the OP hole, and they work great because you can see through them with the binos as though there is nothing there. I just got tired of carrying something and decided that Scrim was ready to move to the Mk 2 stage on my head. Just make sure you wash the stuff before you put it on the helmet, cause the coating fromt he factory comes off in the rain and leaves a horrible taste in your mouth.