Made By Mueller. Mueller-exclusive HYDRACINN fabric is the moisture-wicking catalyst for maintaining superior support with heat management. Base sleeve is made of antimicrobial fabric that is uniquely breathable, extremely soft to the touch with flatlock seams, and features a conforming hourglass design. Inner grip strips complete the anti-sweat/non-slip design to help prevent brace migration and preserve high-performance support. This ultimate brace provides maximum support for weak or unstable knees, as well as protection after injury.Measure around center of knee.