CW-X Generator Revolution Tight - Men's Nylon^Polyester^Spandex Made in USA or Imported A non slip double reinforced waistband and drawstring keep everything in place UV protection Provides extra support to the lower abdominals, hips and back for extra stability and power to the core area Offers gentle and continuous support to both the medial and lateral heads of the gastrocnemius in the calf Helps the muscles and ligaments band together to stabilize the knee joint