Elevate Your Everyday Defense: The Vertx Siege Sling Ballistic Insert
Designed to fit seamlessly into the Vertx Siege Sling, this lightweight & flexible Level IIIA / HG2 backpack armor will provide you and/or your loved ones with years of dependable service.
Custom-built to fit perfectly inside Vertx’s versatile Siege Sling.
Dimensions: 8.75" x 13.62"
Weight: 1.1 lbs
Vertx Siege Sling Insert At A Glance |
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Armor Materials |
Proprietary ballistic package sealed in a waterproof ripstop fabric, then covered with a protective outer layer of 500 Denier Cordura®. |
Physical Specifications |
Panel Size: 8.75" x 13.62" Weight: 1.1 lbs Thickness: 0.22" |
Warranty |
5 years |
NIJ Certification Standard | Level IIIA / HG2 |
Made In | Made in the USA and Berry Amendment Compliant: Manufactured in the United States using only domestic materials. |
Stab Protection |
While ballistic fibers naturally offer some resistance to stabs and slashes, this product is not formally tested or rated for stab protection (NIJ Standard 0115.00). |
Compatibility |
This backpack insert is compatible with the following bags:
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Additional Features |
Soft and flexible TSA-approved |
Why the Vertx Siege Sling + Insert?
Vertx’s Siege Sling is a “mission-capable pack for everyday,” blending tactical functionality, like MOLLE webbing and a hidden CCW compartment, with commuter-friendly organization. This Level IIIA / HG2 insert complements the bag’s versatile design by adding robust ballistic protection. Whether you’re heading to the office, traveling across town, or embarking on a weekend adventure, you can “siege the mission, siege the day, siege life”, knowing you’ve got discreet protection right where you need it most.

The NIJ 0101.07 Standard calls for the following test rounds:
Round | Velocity (ft/s) |
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9mm FMJ RN | ~1,470 ft/s |
.44 Magnum SJHP | ~1,430 ft/s |
In addition to stopping penetration, the armor must limit backface deformation to 44mm to reduce blunt force trauma.
To learn more about the NIJ body armor standards, read our Understanding Body Armor Ratings article.
Want to see the full test report? View the test document below:
*Note: In the penetration column, "P" stands for partial penetration, meaning the bullet was captured by the armor and did not fully pass through. This is a successful result. A failure would be marked as "C" or "CP" for complete penetration, indicating the bullet fully passed through the armor.
What's Inside Premier Backpack Armor?


For years, we've partnered with Vertx to provide custom-fit ballistic inserts for each of their bags and packs. Inside every Premier Body Armor backpack insert, you’ll find the same advanced ballistic material used in our NIJ-certified law enforcement vests.
Multiple layers of proprietary ballistic fibers are carefully woven to absorb and disperse impact, much like a spiderweb catching its prey, while remaining exceptionally lightweight and flexible.
A rugged Cordura cover then protects these ballistic layers from everyday wear and tear, ensuring your backpack insert can outlast the bag itself and provide lasting peace of mind.
Let's put it to the test
FAQs: Backpack Armor
We recommend measuring the width and height of your bag's main compartment or laptop sleeve, then selecting the insert dimensions that best match.
Our inserts come in multiple sizes to fit a wide range of bags, so whether you’re using a purse, briefcase, or school backpack, you can be sure to find a secure, snug fit.
Premier Body Armor has designed custom-fit inserts for these Vertx bags:
- Siege Pack & Siege Sling
- Ghost Pack & Ghost Sling
- Everyday Fanny Pack
- Gamut (Gen 2 & Gen 3)
- Commuter Sling (Gen 2 & Gen 3)
- Ready Pack (Gen 2 & Gen 3)
- Transit Sling
- SOCP Tactical Fanny Pack
- Tourist Sling
- Commuter Sling XL 2.0
- Basecamp
- Navigator
- MP Waist Pack
- Long Walks 28L & 15L
- EDC Essential Sling
- VTAC Rifle Scabbard & Pistol Scabbard
Body armor is legal to own in all 50 states; there are no special permits or licenses needed. However, we cannot ship to Connecticut or New York due to state laws and restrictions.
If you’re unsure about the laws in your specific region, we encourage you to review local guidelines or consult a legal professional.
Use a damp cloth or mild soap to spot-clean the Cordura® exterior. Avoid submerging the entire panel in water or using harsh chemicals, as this could compromise the ballistic materials.
If your panel comes in contact with excessive moisture or other substances, allow it to air-dry completely before re-inserting into your bag.
No, our backpack inserts are made with non-metal materials and are TSA approved, so you shouldn't have any issues during standard airport screenings. Always check with official TSA guidance and your airline’s policies for the latest information on traveling with body armor.

Vertx Ghost

Vertx Siege
Law Enforcement / First Responder / Military discount available
Please see TERMS & CONDITIONS for additional details regarding lead time, shipping, warranty & return policy.