Rebel Pro stock sizing reference — manufacturer US form OF-014 Rev. H
Measurement: Circumference 6 inches above mid-patella; medial-lateral knee width (not circumference) at knee center; circumference 6 inches below mid-patella. All chart values are in inches, reproduced from the manufacturer US form.
| Size | Circumference 6 inches above mid-patella (inches) | Medial-lateral knee width at knee center (inches) | Circumference 6 inches below mid-patella (inches) |
|---|---|---|---|
| XS | 12 1/2–15 1/2 | 3–3 1/2 | 11–12 1/2 |
| MD | 18 1/2–21 | 4–4 1/2 | 13 1/4–15 |
| LG | 21–23 1/2 | 4 1/2–5 | 14 1/4–15 3/4 |
| XL | 23 1/2–25 | 5–5 1/2 | 15–17 |
| 2XL | 25–28 | 5 1/2–6 | 17–19 |
| 3XL | 28–31 | 6–6 1/2 | 19–21 |
- This is a stock-size reference for proportional leg sizing, not a size chart for custom fabrication or three-measurement custom-fit assembly.
- The SM size row is omitted because the manufacturer webpage and linked form disagree on its calf maximum. Ask BFY to confirm the applicable small-size range.
- The manufacturer US form identifies 2XL and 3XL as Pro-only configurations.
- The manufacturer US form limits 3XL to a 14-inch brace with an anterior tibial shell.
- The source uses 2XL and 3XL; the product webpage labels the corresponding sizes XXL and XXXL.

