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Alpinestars MTB Knee Guard Sizing

To measure upper leg, measure the circumference 10cm or 4 in above the knee cap. Measure your calf at the widest part.
Size Upper Leg (cm) Calf (cm)
2XS 33-36 26-29
XS 36-39 29-32
SM 39-42 32-35
MD 42-45 35-38
LG 45-48 39-41
XL 48-50 41-43
2XL 50-52 43-45

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How to Measure

  • CF Calf
    While standing upright, feet flat on the floor, measure the circumference of your calf at the widest point, while keeping your ankle bent at a 90° angle.
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