Hi there, I've been wondering if someone can explain this concept a bit. I've heard that most non-issue items are not IRR, and therefore appear to glow when seen through night vision equipment. I've also heard that comercial detergent makes IRR items non-IRR (though from my own experience I don't believe this). From what I've seen, it appears to be mostly synthetic materials which have this problem as I've seen waterproofs and fleece tops which appear very bright through NVGs. The concept of things being Infra Red Reflective, would in my opinion make them appear brighter (i.e. reflecting light). So why is it that non-IRR things don't appear dark through NVGs?