All Star Adult System7 Axis Catcher's Chest Protector (16.5") The Certified System 7 Axis Chest Protectors have all the technology and features of our past 2 generations of pro-level chest protectors, plus enhanced protection in the upper chest area. Certified by SEI to meet NOCSAE standard for protection against commotio cordis Patent Pending chest panel for improved protection Wedged abs for improved blocking and ball control Moldable PE plates in the shoulders and throat Diamond vented back side for weight reduction and breathability Stainless steel matte black hardware Thinner, more form-fitting Delta Flex harness for enhanced fit and comfort Adult Size: 16.5"