If you enjoy not getting paralyzed or having your organs pulverized, consider investing in this vest. Brand new, worn once. Owner no longer rides. Retails for $700-800.
From the manufacturer: In case of a fall, the vest inflates a significant gas volume that distributes the energy of impacts very effectively. The TURTLE Technology is a breakthrough innovation that significantly improves energy absorption especially of sharp or intruding objects that would otherwise damage the bags of air. A SAS-Tec back protector Level 2 is integrated for the full Turtle effect. Be as SAFE as you can when riding. Brand new condition.