The MVP-PRO™ Series Chest Protector is SEI Certified to meet NOCSAE Standard for Commotio Cordis. Features our revolutionary 3DU Bar® technology for the most advanced blocking in the game. Increases the blocking area by 50% to keep block balls within arms reach Completely redesigned Delta Flex® harness system that ensures a firm yet breathable fit with maximum mobility CON4M® Fit Tech features formable collarbone protection 16.5"