I will try and not get on my soap box about this and keep in clear and concise (forgive me in advance if I rant I'm pretty bitter about zylon)
Okay,
Zylon was marketed as the new whizz bang cool guy super duper body armor it was a hell of alot lighter and more flexible than any kevlar or like product. It also cost alot more (imagine that).
Second Chance came out with a line of vest the Ulitma something like that. A level 2 vest cost me 1100 bucks, come to find out that if your vest was every exposed to 120 + degrees with like 60 or 70% humidity your vest would permenatly degrade (read NO longer stop rated rounds)
. An Oceanside, California Police Officer by the name of Tony Zappatolle (sp) was wearing this vest last June when he was shot and killed when his vest FAILED to stop rated rounds. Another officer in PA had a vest failure he now has a bullet in his stomach, but he is still alive.
Second Chance pulled alot of bullshit trying to skirt and avoid any responsibility (Read DON'T BUY SECOND CHANCE BODY ARMOR). It took me almost 6 months to get a replacement vest from Second Chance one they finally admitted there was a problem. You can read alot more about it at
www.tacticalforums.com check out there Mad Dog Labs for all the technical stuff.
Bottom line it was markted as the "new" kevlar meant to revolutionize concealable body armor. All it did was cause 1 fatality and atleast one other documented failure in the line of duty.
If you need me to go into more detail I will.