CW-X Men's Stabilyx High Performance Compression Sports Tights 100% Spandex Imported Patented CW-X Support Web bands together muscles and ligaments to stabilize knee Supports the lower abdominals, hips, and back to channel power through the core 80 percent Coolmax/20 percent Lycra construction offers 4-way-stretch comfort Flat seam construction; key pocket; double-reinforced waistband with flat drawcord 80% Nylon/ 20% Lycra Provides Targeted Support to the knee and core joints and muscles 80% Coolmax/ 20% Lycra Helps to keep the body cool and dry, pulls moisture away from the body and carries it to the outside of the tight