By measuring your chest circumference.
With standard sizes (6″, 8″), it is made to cover your lethal zones on the torso (heart, lungs, kidneys) without extending further due to weight. To make the correct choice, you can use the Size Chart in the Tech Specs or the Determine Size at the settings screen on the top of the page.
Armor plates are tested under the NIJ standard to withstand up to 6 consecutive hits. While that number can be greater, we can’t guarantee that result.
It is not recommended.
You may continue operations with a damaged armor plate due to composite materials that, when damaged, only a tight zone of the armor fails. Undamaged zones still offer ballistic protection. However, you will need to replace the armor plate after the mission as further use is prohibited.
Officially, 5 years.
The date is calculated from the manufacturing label on the back of the plate. While good maintenance and handling can preserve the plate ballistic capabilities for longer, we will only guarantee five years from manufacturing.
Due to chemical processes and oxidation occurring inside the composite material, the anti-ballistic capabilities of the armor plate will slowly deteriorate over time. After five years, we no longer guarantees the same level of protection and you should renew your plates as soon as possible.
The UARM™ SA4S™ hard plates are ergonomically designed to fit equally good on the front and on the back.