Cell Technology chest protector features a highly perforated shell for high levels of ventilation and protection The flexible side adapts to the rider's body shape Features a Cell Technology back protector with a flexion channel for enhanced mobility Removable shoulder pads for high levels of customization Extended padding to offer more protection against tire roost without obstructing arm movement The protectors are perforated for maximum breathability and cooling ventilation Elastic closure system features quick and easy-to-use buckles that fit a broad range of rider body sizes Thermoformed padded chassis for optimized levels of comfort and a close-to-body fit Adjustable shoulder straps for an optimal fit 2 sizes available are MD/LG & XL/2X