Tactical Vest Size Charts and How to Measure
Measure your chest and waist correctly, understand the adjustment allowance behind the chart, and sizing falls into place — with practical tips for kids and layering.
Measure the right two numbers first
For a vest size, measure two things: chest and waist. Wrap a soft tape around the fullest part of your chest, breathing normally, snug but not tight; measure the waist at the narrowest point above the navel. Most vest sizes map to chest ranges, while waist decides whether the side straps cinch properly.
Measure in a T-shirt, not a thick coat, or the numbers run large.
Reading the chart and adjustment allowance
A vest size chart usually gives a chest range (e.g., M for 90–100cm). The key is the adjustment allowance: with adjustable shoulder, waist and chest straps, one size covers a spread of body types. Styles with wide adjustment fit more bodies and layer more easily over thick clothing.
For a plate carrier, first confirm your plate size (US SAPI comes in S/M/L/XL), then pick the carrier to match — the two must correspond.
- Chest: sets the main size — fullest part of the chest
- Waist: whether side straps cinch — narrowest point above the navel
- Plate carrier: choose by SAPI plate size S/M/L/XL first
- Adjustment allowance: more means better layering and body-type coverage
Layering allowance for all seasons
If you'll wear the vest over fleece or a soft shell in winter, leave 3–5cm of allowance when choosing the size. One trick: size by your chest measurement in your thickest winter outfit, then tighten the straps down in summer — one vest for all four seasons.
Kids' sizing is different
Kids' vests are usually sized by age or height (e.g., 4–12 years, or 45cm+ height). Kids grow fast, so prefer styles with wide adjustment and a roomier cut — fitted now with room to grow. Materials should be lightweight with no sharp hardware; safety comes first.