Body armor is worn by law enforcement and military personnel, security professionals, and civilians who buy it for themselves. How it is stored between uses is part of its care, and NIJ calls maintaining and storing armor according to the manufacturer's instructions key to its continued performance.
Whether you are a seasoned professional or a first-time buyer, the storage rules are short and cheap to follow. While the purchase of body armor gets the attention, storage is where much of its care happens.
NIJ notes that the actual performance of each vest may vary with how it has been stored and maintained, environmental exposure and differences in use. This guide sets out what NIJ and the makers advise, and the common mistakes.
Importance of proper body armor storage
The sources name the same factors in storage as in use. NIJ says ballistic performance may be degraded if armor is exposed to moisture, that ultraviolet light is known to degrade certain types of ballistic materials, and that armor should not be stored where it may be exposed to extreme temperatures. NIST has studied how heat in storage and use can reduce the strength of UHMWPE (polyethylene) fibers.
Not all of it shows. NIJ warns against assuming that an appearance of good condition implies good performance. NIJ also said in 2012 that age alone does not cause body armor's ballistic resistance to deteriorate, and that care and maintenance are vital: storage is part of that care.
Ideal storage conditions
NIJ's general guidance is to store armor as the supplier recommends, and in general flat at room temperature in a dry, shaded place that minimizes exposure to direct light. Air-dry damp armor before storing it: NIJ suggests turning it inside out or opening it and laying it flat so moisture can evaporate.
On hanging, the sources differ in emphasis. NIJ's care guidance says armor may be hung from a specially designed, robust hanger made for body armor, because wire and wooden hangers may break or buckle under its weight, and it warns against hanging armor by the carrier straps, which may stretch them and change how the armor sits and what it covers. NIJ's factors page notes that hanging a vest instead of laying it flat can reduce its effectiveness. Our advice: store it flat unless the maker's instructions allow hanging, and then only on a hanger made for armor.
For how materials differ, see Materials Used in Armor Plates Explained.
Cleaning and maintenance tips
Clean armor before you store it, and only as the maker's instructions say. NIJ's general procedure for soft panels is to remove them from the carrier, wipe the outer cover with a damp sponge or soft cloth and cold water, and air-dry them flat without folding or creasing. NIJ advises against machine washing, dry cleaning or submerging panels, and against chemicals the manufacturer does not specify; bleach or starch, even highly diluted, may reduce the protection level.
For hard plates, NIJ's guidance is about handling: plates, particularly those with ceramic, may be fragile, and dropping ceramic plates on hard surfaces can cause breaks or cracks that can have an adverse effect on performance. We found no NIJ or CJTTEC cleaning procedure for hard plates (checked 1 October 2026), so the method is the maker's.
For costs, see What Does Body Armor Typically Cost?.
Avoiding common storage mistakes
NIJ and CJTTEC name the mistakes:
- Storing armor where it may be exposed to extreme temperatures, hot or cold, such as the trunk of a vehicle, or to prolonged direct sunlight, such as the rear window deck of a vehicle.
- Storing armor in a low-airflow spot, such as the bottom of a locker.
- Hanging armor by its carrier straps.
- Needlessly flexing, bending, compressing or creasing soft panels, which may contribute to degradation of ballistic materials over time. Stacking heavy items on top of armor compresses it.
Our advice: avoid damp places such as basements, and keep armor somewhere it will not be crushed or bent. For context on why this matters to agencies, see The Role of Body Armor in Law Enforcement.
Long-term storage solutions
Armor that is rarely worn still needs the same conditions. We found no NIJ or CJTTEC guidance on vacuum-sealed bags (checked 1 October 2026). NIJ warns against compressing soft panels and against low-airflow storage, so in our view sealing armor tightly works against both.
A dedicated storage case can protect armor from dust and knocks, in our view, as long as it lets the armor lie flat, stays dry, and sits away from direct sunlight and extreme temperatures. Keep it with the label information: CJTTEC advises copying the information on each new vest's label and keeping it in a safe place.
Even in long-term storage, check it. NIJ advises inspecting panel covers frequently and hard plates before each use.
Regular inspection and replacement
NIJ advises visually inspecting panel covers for cuts, tears, stitching separation, sealing problems and worn or frayed fabric, and hard plates for surface cracks or other damage. Damage to a plate is a clear indicator that it should be replaced, NIJ says. If you find damage, NIJ advises notifying the agency representative, never opening the panel covers, and never attempting to repair armor panels.
The date on the label is the manufacturer's warranty period for ballistic performance, which CJTTEC, the administrator of NIJ's Compliance Testing Program, notes is not evaluated by the program; CJTTEC advises knowing that date and replacing the vest in a timely manner. A vest struck by a bullet or edged weapon can have damage to the interior layers of ballistic fabric as well as the carrier and cover, and CJTTEC says it should be replaced immediately. For more on service life, see How Long Does Body Armor Last?.
Conclusion
Storing body armor well is simple: flat, dry, shaded and at room temperature, out of vehicles and low-airflow spots, off wire hangers and carrier straps, and inspected before it goes back into use. Our advice: follow the maker's instructions first, and when they differ from general guidance, theirs is the one written for your armor.
To check a model, ArmorList's product records show the standards a model is recorded as tested to and, for NIJ, its CPL status with the date the list was read.
Sources
- NIJ, Body Armor Selection, Care, and Maintenance (NCJ 251599) (read 2026-10-01)
- NIJ, Selection and Application Guide to Ballistic-Resistant Body Armor (NIJ Selection and Application Guide-0101.06, December 2014, NCJ 247281), chapter 8 (PDF) (read 2026-10-01)
- CJTTEC, Body Armor Care and Replacement (read 2026-09-30)
- CJTTEC, Additional Information Regarding NIJ Body Armor Compliant Product List (read 2026-09-29)
- NIJ, Factors That Impact the Effectiveness of Body Armor (read 2026-09-30)
- NIJ, Statement on Body Armor (7 March 2012) (read 2026-09-30)
- Tsinas et al. (NIST), Effects of Thermal Aging on Molar Mass of Ultra-High Molar Mass Polyethylene Fibers, Polymers (2022) (PMC) (read 2026-09-30)