Sorry for digging up an old thread, but it was how I found the forum, at the time I was looking for a jacket i'd seen on another website and can't find anywhere. Anyway, if anyone knows what it is and where I can get some that'd be great. Here is the spec: It looked like a US issue BDU UCP Shirt but...

I've got a 57 year old British Ration pack still sealed, I think it has beans in it, i'm tempted to try that, i'll post picture before I do.