To measure the correct size for a Tynor Knee Cap, wrap a flexible tape around your thigh approximately 6 inches above the center of your knee, measuring the circumference snugly but not too tight, then match your measurement with the brand’s size chart: S (14.8–17.2 inches / 37–43 cm), M (17.2–19.6 inches / 43–49 cm), L (19.6–22.0 inches / 49–55 cm), XL (22.0–24.4 inches / 55–61 cm), XXL (24.4–26.8 inches / 61–67 cm), and XXXL (26.8–29.2 inches / 67–73 cm). Once you have your thigh measurement, order the size that corresponds to your circumference. This ensures the knee cap fits snugly, provides proper compression, and supports your knee effectively.