The Improved Outer Tactical Vest (IOTV) Gen IV is designed to permit maximum freedom of movement required to assume correct firing positions with the agility to execute and maneuver tasks. Optimal design characteristics ensure the best possible weight distribution of both the ballistic body armor system as well as additional load bearing equipment, thus providing enhanced comfort, wear duration, and mobility. Compatible with E-SAPI (Enhanced Small Arms Protective Insert) and ESBI Side-SAPI plates, the IOTV IV also offers more protective coverage under the arms and the sides of the torso. Modular and fully scalable, the base vest can be easily configured to accommodate full system components including neck-throat protection, deltoid protection, groin and lower back protection.