Bio Skin Hinged Knee Skin Front Closure — current manufacturer sizing
Measurement: Measure circumference with the knee fully extended: 7 inches above mid-patella and 6 inches below mid-patella for the inch columns; 18 cm above mid-patella and 15 cm below mid-patella for the centimeter columns.
| Size | Circumference 7 inches above mid-patella (inches) | Circumference 6 inches below mid-patella (inches) | Circumference 18 cm above mid-patella (centimeters) | Circumference 15 cm below mid-patella (centimeters) |
|---|---|---|---|---|
| S | 18–20 | 13.5–15 | 46–51 | 34–38 |
| M | 20–22 | 15–16.5 | 51–56 | 38–42 |
| L | 22–25 | 16.5–18.5 | 56–64 | 42–47 |
| XL | 25–28 | 18.5–21 | 64–71 | 47–53 |
| XXL | 28–32 | 21–24 | 71–81 | 53–61 |
- Rows are limited to S, M, L, XL and XXL, the sizes listed on the BFY product page. This does not confirm current stock.
- BioSkin's catalog identifies Hinged Knee Skin Wraparound as model 5133; the current official model 5133 page calls it Hinged Knee Sleeve - Wraparound and describes its front closure.
- This is the current model 5133 product-linked chart, not the older catalog's mid-patella-and-thigh chart. Confirm the product version with BFY if using older packaging or sizing instructions.
- Inch and centimeter ranges and measurement locations are reproduced as published; no unit conversions were calculated.