L Size: Fits upper knee circumference 17"–26" (43.2–66.1cm), and lower knee circumference 16"–25" (40.6–63.5cm). Designed for larger leg sizes or those needing extended coverage. S/M Size: Fits upper knee circumference 12"–22" (30.5–55.8cm), and lower knee circumference 11"–20" (27.9–50.8cm).
