Compression sleeve for the Knee. Copper Fit's highest level quality sleeve. Copper-infused for odor reduction. Helps aid in muscle recovery and provides muscle relief. Wicking sweat and odor reduction. Ventilation behind the knee. A breathable circular knit. Compression has been shown to improve circulation and temporarily relieve muscle and joint aches and pains and speed recovery time. Compression garments are only effective when they are worn and properly sized.