TARGETED SUPPORT FOR RUNNERS The Nike Zonal Strength Men's Running Tights offer incredible support for key muscles and exceptional stretch to help you conquer your fastest, longest runs. Targeted Support Nike Zonal Strength technology creates a compressive, locked-in feel around your quads and calves to help reduce muscle vibration. Four-way stretch fabric moves with your body so you can run without restriction. Breathable Comfort A low-profile Flyvent waistband is lighter and more breathable than traditional waistbands to help you stay cool in a high-heat area. Secure Storage A waterproof, zippered pocket on the back offers secure, dry storage for small items. More Details Drawcord waistband for a custom fit Mesh fabric gusset liner for breathable comfort Reflective elements stand out in low light Flat seams move smoothly against your skin Fabric: Upper body/knee: 79% polyester/21% spandex. Thigh/lower body: 77% polyester/23% spandex Machine wash Imported