THE SIZING CHART IS IN THE PRODUCT IMAGES GALLERY·       Removable Velcro Patches on front and back·       Holds standard 10x12 Armor Plates in both front and back over the internal IIIA+ soft panels inside the vests vests are quality control tested and produced in full compliance with NIJ .06 pre-testing standards. We are fully Licensed and Insured to manufacture and sell body armor. Don’t buy from non-reputable vendors overseas.Compliant with NIJ IIIA Standard-0101.06 via pre-testing standards done by the NIJ Certified HP White Ballistics Laboratory. This model complies with NIJ Standard-0101.06 for Ballistic Resistance of Body Armor. By the pre-testing standards seen attached.1. The armor covers the largest amount of area in this kind of vests. Full wrap around coverage.2. The lightest vest for the armor coverage you get 3. The armor material is the most advanced blended “Ultra High Molecular Weight PE” fiber material 4. Made by one of the most prestige manufacturer in the industry under ISO 9001:2000 international standards.5. Specialty PE material requires no trauma plate and can sustain multiple hits while remaining flexible.6. Vests are waterproof, corrosion proof, UV proof, and stab / slash resistant. The vests are certified by a 3rd party test conducted by the HP White ballistics lab. See image gallery for copy of NIJ pre-test certification.8. Can stop fast moving sharp objects such as arrows and knives.NIJ LEVEL IIIA:(.44 Magnum; Submachine Gun 9mm). This armor protects against .44 Magnum, Semi Jacketed Hollow Point (SJHP) bullets, nominal masses of 15.55 g (240 gr.), impacting at a velocity of 426 m/s (1,400 ft/s) or less, and against 9mm full-metal jacketed bullets, with nominal masses of 8.0 g (124 gr.), impacting at a velocity of 426 m/s (1,400 ft/s) or less. It also provides protection against most handgun threats, as well as the Level I, IIA, and II threats. Level IIIA body armor provides the highest level of protection currently available from concealable body armor and is generally suitable for routine wear in many situations.