Size guide: RX Knee Sleeve 3mm
Measure once and use the table to find the size that fits you.
Size chart
| Size | Calf circumference (cm) | Calf circumference (in) |
|---|---|---|
| XXS | 29–31 | 11.4–12.2 |
| XS | 31–33 | 12.2–13 |
| S | 33–35 | 13–13.8 |
| M | 35–37 | 13.8–14.6 |
| L | 37–40 | 14.6–15.7 |
| XL | 40–43 | 15.7–16.9 |
| XXL | 43–46 | 16.9–18.1 |
Between two sizes?
For heavy lifting and maximum support, choose the smaller size. For dynamic sports or more comfort, choose the larger size.
First time wearing knee sleeves? Then choose the larger size.
How to measure correctly
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Grab a measuring tape
A flexible tape measure works best. No tape at hand? Use a piece of string and measure it against a ruler afterwards.
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Sit down and bend your knee slightly
Sit on the edge of a chair and stretch your leg forward with your heel on the floor, so that your knee is only slightly bent – about 30°. Relax your leg.
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Find the measuring point
Measure 10 cm down from the centre of your kneecap and remember this spot – this is where you’ll measure your calf in the next step.
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Measure around your calf
Wrap the tape around your calf at this spot. Keep it level and snug against the skin, without pulling it tight.
How to measure – video
The video shows you step by step how to measure correctly.





