Have just purchased an Alpinestars Tech-air vest and compatible jacket. Got a 20% discount on the jacket at MotoGP in Austin in April. It's expensive but so are medical deductables, physical therapy and everything else associated with an injury. Tried to set it up for the first ride today but couldn't connect the wiring like the manual says to, so I took it back to Cycle Gear to see if they can get it right. Witnessed a close friend wearing a He-Lite vest get creamed last year when we were returning from Sturgis. He was stopping hard for a late-announced left turn. I was ahead of him and 2nd in our group of about 9. I decided it would be too risky to the others to make the turn-in, so I and #3 went on to turn around and come back. Jim was rider #5, about 75' behind me. An older driver in a pickup hit him hard from behind. I watched it all in my review mirror from start to finish. Motorcycle parts flew everywhere, and he went flying too. His Beemer went tumbling down the highway. I stopped and turned around and raced back to the scene. I through for sure I'd find him dead. He was on his knees, vest puffed out! I couldn't believe it, and asked how are you? He said pretty good! We got an ambulance and him to the hospital for examination and observation. He was not badly hurt and was dismissed the following day. It was stunning and shocking to watch and am very glad he came out ok. The Beemer was destroyed. The back wheel was crushed in half and split apart, frame very bent, all the plastic from the tank back destroyed and scattered in shards on the highway. The bike took nearly all the impact. No doubt it could have been much worse and I think his vest had a lot to do with it. We all spend whatever it takes to buy great helmets and now that this technology is available, I'd rather use this money to prevent an injury than to repair one, not to mention the down time and pain and suffering. BTW, my GL1800 is an '08 Airbag, so if I ever t-bone anything I'll be exploding all over the place!