God knows I'm not an expert in anything to do with survival, but ... this seems to fall into the “Gee that looks neat but I wonder if it REALLY works” category. Yes, a pink or orange ribbon is not natural and therefore is somewhat attention-getting, but looking at the photos on their web site, I wasn’t that impressed with how visible it DID make a survivor. If I did buy one, it would be in addition to other signaling aids, not as the primary one.