Lost a local rider from my area due to a accident in Wis.. I'm not sure if he was wearing a "TechVest", or not. Traveling at 40/50 mph, he was thrown off the sled due to a dip in the trail, and his sternum had impact on a tree. His sled stayed on the trail. It sounds like one of the aorta's was severed due to impact. Dead immediately. This is a terrible question to ask, but could a "TechVest have prevented this??? I realize this is some what of a loaded question, but I had to ask it. Serious thoughts only please. I just can't get comfortable in any vest I have tried. And I bought a large enough coat to be able to wear a vest. May God Bless all his family, and friends to their loss. Peace be to them.