For The DonJoy Reaction Knee Undersleeve take the measurement of your thigh and calf 6″ above and below your kneecap using a flexible type tape measure. Use the circumference you measure here to choose your size.
Note: The DonJoy Reaction UnderSleeve runs small. If you measure between sizes we recommend going up one size for optimum comfort and fit
Size | Thigh |
XS/S | 13.5″ – 18 .5″ (39-47 cm) |
M/L | 18.5″ – 23.5″ (47-60 cm) |
XL/XXL | 23.5″ – 29.5″ (60-75 cm) |
XXXL | 29.5″ – 32″ (75-79 cm) |