The Velocity Systems Throat & Collar Protector Set offers Level IIIA protection for your neck and throat area. The set attaches to amodifiedLow-Profile Armor Carrier (LPAC) and the Low-Profile Assault Armor Carrier (LPAAC). 33A Dyneema Ballistic Specifications NIJ Ballistic Model No: VS-33A NIJ Certified: Type/Level III-A Ballistic Material: 100% Dyneema Ballistic Panel Thinness: .22 inches Weight: .99 lbs./sq.ft Fragmentation: Meets/Exceeds USSOCOM & IOTV requirements 06 Aramid Ballistic Specifications NIJ Ballistic Model No: VS-63A1 NIJ Certified: Type/Level III-A Ballistic Material: 100% Aramid Ballistic Panel Thinness: .27 inches Weight: 1.18 lbs./sq.ft Fragmentation: Meets/Exceeds USSOCOM & IOTV requirements NOTE:This set will not work with a standard LPAC or LPAAC.Call to order a modified armor carrier if yours is not already configured for adding the Throat and Collar protectors. All hook and loop material used is color matching Velcro Brand Fasteners. All materials and workmanship are 100% made in the USA.