Safe-T-Sport Neoprene Closed Patella Knee Sleeve Support by FLA X-Large Navy. FLA Orthopedics Sports Neoprene Closed Patella Knee Sleeve is ideal for knee sprains, arthritis, contusions, meniscus tears, knee joint effusions, and weak quadriceps. The knee support brace is made of neoprene which retains the body's natural heat to provide therapeutic warmth to joints and muscles in the knee. This neoprene knee brace is the choice of many orthopedic and sports medicine professionals because it provides consistent compression to support the knee while running or playing sports like basketball and tennis. FLA's sports knee braces come in 7 sizes including xxl (2XL) and xxxl (3XL). Black or Navy. One knee sleeve per package.