Plate sizing guide
A plate is meant to cover your vitals, not your whole torso: the top edge sits at the sternal notch (the dip between your collarbones) and the bottom ends roughly 2–3 cm above the navel. If a plate covers nipple-to-nipple in width and notch-to-navel in height, it fits.
Enter your chest measurement for a size suggestion.
| SAPI | inches | cm |
|---|---|---|
| XS | 7.25 × 11.5 | 18.4 × 29.2 |
| S | 8.75 × 11.75 | 22.2 × 29.8 |
| M | 9.5 × 12.5 | 24.1 × 31.8 |
| L | 10.125 × 13.25 | 25.7 × 33.7 |
| XL | 11 × 14 | 27.9 × 35.6 |
General guidance only — cuts and exact dimensions vary by manufacturer; always check the maker's own size chart. When between sizes, prioritize full coverage of the vitals over mobility.