THE CONSUMER PLACED THE T-STRAP RESTRAINT OVER THE CHILDS HEAD AND TIGHTENED BY PULLING THE STRAP, THE STRAP JAMMED AND CONSUMER CONTINUED TO PULL ON THE STRAP CAUSING IT TO SUDDENLY RELEASE. THE RESTRAINT TIGHTENED AROUND THE CHILDS NECK LEAVING A BRUISE. GRACO CHILD SAFETY SEAT (MODEL 8580HE). *MJS