Gym & Fitness Training. S-M: Upper knee 30.5–55.8 cm (12–22 in), Lower knee 27.9–50.8 cm (11–20 in). L: Upper knee 43.2–66.1 cm (17–26 in), Lower knee 40.6–63.5 cm (16–25 in). Cycling & Daily Knee Support.
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