only worn twice. in great used condition. size small. Make gearing up for your next moto easy by throwing on the Alpinestars Stella Bionic Jacket. With built-in chest, back, shoulder and elbow armor that meets the latest safety standards, and direct integration of Alpinestars' BNS neck brace, you don't need to worry about forgetting anything on your way to the track. The Bionic Pro Jacket literally has you covered front to back. chest protector dirtbike