I. Product specifications
1000D Oxford three-layer full-protection NIJ LEVEL IV bulletproof and stab-proof vest, full-protection body armor, including neck guard, shoulder pads, front panel, rear panel, hand guards, composed of jacket, protective layer, protective sleeve, and bulletproof plate. The protective layer of the fully protective body armor is mainly made of 45 layers of polymer polyethylene PE composite material. The whole piece mainly provides 12 pounds (5.6KG) of large-area protection, with no dead ends throughout the body and a protection area of 0.68 square meters. Available in black, military green, camouflage and other colors, the size is one-size-fits-all and adjustable, suitable for all adults from 120lbs to 270lbs. This full protection body armor is already equipped with two NIJ III ballistic panels on the front and rear, so there is no need to purchase additional ballistic panels. 900D Oxford three-layer full-protection NIJ LEVEL IV bulletproof vest, full-protection body armor, has been widely used in the military field and has become one of the indispensable equipment for soldiers.

II. Product description
Compared with ordinary body armor, the protective area of the full protection body armor is further expanded to strengthen the protection of life safety parts. Different levels of protection are required. Bulletproof inserts with different protection levels are soft in texture, comfortable to wear, flexible in movement, excellent in elasticity, anti-aging, waterproof, moisture-proof, and UV-proof. They are the first line of protective equipment for frontline operations and duties.

1. Protective layer structure: The protective layer structure of the bulletproof and stab-proof clothing is composed of 45 layers of polyethylene fiber non-woven fabric (four orthogonal layers) + 1 layer of 4.5mm thick foam plastic.
2. Shell sealing performance: The protective layer is sealed with an anti-seepage and anti-seepage black protective shell, and the sealing edge is even. The protective cover material is impermeable and has a hydrostatic pressure resistance of not less than 18kPa.
3. Flexible to wear: Flexible to wear, easy to put on and take off. After wearing it, the free movement of the arms and the human body's movements such as kneeling, jumping, running, pitching, and turning should not be significantly restricted.
4. High quality: The outer layer is made of 900D Oxford cloth, and the protective layer is made of 45 layers of polyethylene fiber non-woven fabric. Features sturdy structural design, excellent tensile strength and wear resistance. 100% money back or exchange guarantee if you're not satisfied with the item within 30 days.

III. Bulletproof test
1. Room temperature bulletproof: Tested using 1979-style 7.62mm light submachine gun and 1951-style 7.62mm pistol bullets (lead core). In the case of a valid hit, if the bullet is blocked, the maximum groove depth should be less than or equal to 25mm.
2. Soak bulletproof: Soak the bulletproof and stab-proof clothing in room temperature water for 30 minutes, and then perform a bulletproof test. To withstand effective bullet impact, the maximum indentation depth of the backing should be less than or equal to 25 mm.
3. High temperature bulletproof: After the high temperature test (+55℃±2℃, constant temperature for 4 hours), perform the bulletproof test within 15 minutes. In the case of an effective hit, the bullet is blocked and the maximum sinking depth of the backing is ≤25min.
4. Low-temperature bulletproof performance: After the low-temperature test (-20℃±2℃, constant temperature for 4 hours), conduct the bulletproof performance test within 15 minutes. In the case of an effective hit, the bullet is blocked and the maximum sinking depth of the backing is ≤25min.
5. Bulletproof and damp-heat performance: After passing the damp-heat test (70℃±2℃, 80% relative humidity, 240h), conduct the bulletproof performance test. In the case of an effective strike, the bullet is blocked and the maximum sinking and rebound depth is ≤25min.

IV. HOW TO CHOOSE THE CORRECT SIZE OF YOUR BODY ARMOR