The McDavid NRG Spring Hinge Knee Over Wrap is best for moderate to major joint instabilities, recovery from sprains and strains, reducing fatigue, and post-surgical joint protection and rehabilitation. Spring Hinge Joint Assist technology helps relieve tension and stress on muscles and knee joint, reducing stress on knees up to 25%*. NRG helps reduce fatigue during activity, aiding in knee recovery. Easy-on design can be worn over pants, customizable compression level helps you find optimal support and comfort. *Based on wearing one NRG brace per knee (equivalent up to 12.5% per knee).