How to measure your body to determine the appropriate size of ballistic-resistant body armor

What You’ll Need

  • Soft measuring tape (tailor’s tape)

  • A mirror (optional, for self-measuring)

  • A friend or assistant (recommended for accuracy)

Step-by-Step Body Measurements

1. Chest Circumference

  • How: Measure around the fullest part of your chest, under the armpits, with the tape parallel to the ground.

  • Purpose: Determines the front and back panel width.

2. Waist Circumference

  • How: Measure around your natural waistline (just above the belly button).

  • Purpose: Ensures the vest doesn’t restrict movement or dig into your abdomen when seated.

3. Torso Length (Front)

  • How: Measure from the top of your sternum (suprasternal notch) down to about 1 inch above your navel or the belt line when seated.

  • Purpose: Determines how long the front panel should be for protection without interfering with mobility or sitting comfort.

4. Torso Length (Back)

  • How: Measure from the base of your neck to your belt line at the back.

  • Purpose: Ensures full spinal coverage without overextending into the lower back.

5. Shoulder Width (Optional)

  • How: Measure from the tip of one shoulder to the other across the top of the back.

  • Purpose: Helpful for external carriers or tactical vests to ensure proper fit.

Sizing Tips

  • Body armor should cover vital organs (heart, lungs) without restricting movement.

  • It should not extend below the navel when seated — otherwise, it may ride up.

  • Always consult the manufacturer’s size chart, as sizing may vary between brands.

Final Recommendation

Once measured, compare your data to the sizing chart provided by the armor manufacturer. If between sizes, choose the larger size for adjustability or consult the vendor for custom fitting.

Check Body Armor Sizing Measurement Form