Custom Armor Group 4sss2 Level IV Stand Alone Multi Curve Armor Plate 9.5in x 12.5in. made in specialized factories and constructed from lightweight silicon carbide the 4sss2 is NIJ 0101.04 (2005IR) compliant/certified. Specifications for Custom Armor Group 4sss2 Level IV Stand Alone Multi Curve Armor Plate: Manufacturer: Custom Armor Group Fabric/Material: Lightweight Silicone Carbide Threat Level: Level IV Armor Cut: SAPI Thickness: 0.97 in Armor Curve: Multi-Curved Features of Custom Armor Group 4sss2 Level IV Stand Alone Multi Curve Armor Plate NIJ Standard 0101.04 (2005 IR) CERTIFIED: This product is NIJ 0101.04 (2005 IR) compliant Certified by NIJ. RST: Rifle Special Threats Validated Package Contents: Custom Armor Group 4sss2 Level IV Stand Alone Multi Curve Armor Plate Custom Armor Group 4sss2-SAPI-M: 4sss2 Level IV Stand Alone Multi Curve Armor Plate 9.5in x 12.5in