Armor Express Lighthawk S1 Black . Like The M1 The S1 Utilizes The Same Hybrid Ballistics Which Minimize Weight While Increasing Protection. The Time-tested Rectangular Shape Has Been The Standard For Providing Max Coverage For The Operator. The Rear Of The S1 Is Covered In Loop Allowing For Operators To Place Mirrors Entry Tools And Other Equipment Within Arm's Reach While Maintaining The Protection Of The S1. Specifications for Armor Express Lighthawk S1: Manufacturer: Armor Express Additional Features: No Viewport Length: 16 in Height: 20 in Fabric/Material: Nylon Threat Level: Level IIIA Weight: 4 lb Plate Dimension: 16x20 Package Contents: Armor Express Lighthawk S1