Lululemon Athletica Nulux Racerback Cropped Run Tank Midnight Navy Night Sea Women’s Size 6 1. Whether you're running 1 mile, 5k, or 10 000 metres, you can count on this high-neck tank, powered by Nulux ™ fabric, to get you through it with zero distractions 2. Our Nulux™ fabric with engineered four-way stretch provides weightless coverage that's quick-drying, sweat-wicking, and feels cool and sleek 3. Added Lycra® fibre for stretch and shape retention 4. No side seams help prevent chafing 5. Tight fit, cropped waist length