R.E.D. System: A series of bladders between the liner and shell developed with Oblique Technology and the University of Ottawa to reduce rotational acceleration of the head during an impact Liner: Multi density foam liner developed to help manage a variety of impacts Adjustment: Easy single tool-free adjustment at the back of the helmet for a customized fit and high level of comfort Shell: Designed to maximize protective capabilities, a pro preferred look with geometry that helps absorb impacts CCM Resistance 300 Hockey Helmet, Small, Black MS1295701 MS1295701 886832979253