Fits left or right. This lightweight stabilizer provides medial/lateral support and is ideal for stiff, weak, or sore knees. Flexible steel springs provide firm support without restricting mobility. Helps relieve pain and swelling while keeping your knee flexible. The contour design prevents bunching and slippage, ensuring a proper fit. Reinforced trimmed edges improve durability. Open patella prevents slippage while keeping kneecap in place. Breathable fabric for comfortable all-day wear. Two supportive steel springs on both sides provide firm support and protection while allowing full range of movement. Support level: moderate. Product Benefits.