The Zorbium® Action Pad (ZAP™) system comes in two variants: SOF and NSN
 - There are 8 pads in the SOF set: 2x trapezoid and 6x rectangle
 - The NSN set includes 7 pads: 1x large round, 2x trapezoid and 4x rectangle
  
 The pads fit most helmets in use: ACH, LWH, MICH, ECH, etc
  
 All pads have an NSN number
  
 The system exceeds the requirements for ACH blunt object impact (AR/PD 10-02)