lululemon nulux racerback cropped run tank top in black. size 4. amazingly light and cool fit. No side seams help prevent chafing Racerback shape offers a full range of movement Contours your body Not too short, not too long, just right around the waistband Weightless Coverage, Nulux™ Fabric Weightless coverage Engineered four-way stretch Quick-drying Sweat-wicking Breathable Feels sleek and cool to the touch Added Lycra® fibre for stretch and shape retention