CW-X Women's 3/4 Length Endurance Generator Tight Ideal for trail running and the extra stability necessary to navigate the twists, turns and unstable surfaces Support Web Technology EXO-Stretch fabric which combines moisture-wicking, UV protection with dynamic 4-way stretch support CW-X's patented Support Web helps the muscles and ligaments band together to stabilize the knee joint Provides extra support to the lower abdominals, hipsand back for extra stability and power to the core areaof the body, additional Gluteus Medius support structurefor pelvic support