Guard Dog Body Armor's concealable vest is made with a lightweight PEUD material that is NIJ level 3a certified for protection again 9mm and. This vest is light weight and suitable for daily use. Chest sizes: Medium: 35-40 inches, Large 37-42 inches, Extra Large: 41-46? Extra Large: Front: 13.6? This model complies with NIJ Standard-0101.06 for Ballistic Resistance of Body Armor. This item is in the category "Sporting Goods\Tactical & Duty Gear\Body Armor & Plates". The seller is "plzaiw" and is located in this country: CN. This item can be shipped worldwide.