Improved fit and feel. Firm comfortable support for stiff, weak or sore knees. Breathable fabric. Fits left or right. Quality guaranteed. Lightweight elastic knit provides firm support and maintains full range of movement for stiff, weak or sore knees. The contour design prevents bunching and slippage, ensuring a proper fit. A stretch panel over the knee cap and behind the knee provide improved comfort. Wider edges minimize skin marks and prevent rolling. Sizing: Large: 16-19 inch measure around center of knee. A quality Mueller sports medicine product is inside. This Top Care product is laboratory tested to guarantee its highest quality. Your total satisfaction is guaranteed. topcare at topco.com.