Lululemon All Tied Up Tank Ballet Slipper Size 4 Measurements: Pit to pit: 16 inches Length: 24 1/2 inches Wear this tank two ways: layer it on long and loose or tie up the back to secure in place during yoga class. pima cotton Pima Cotton fabric is breathable and soft against your skin Designed for: Yoga Neck coverage : High neck design adds coverage Breathability: Open back provides ventilation Roomy armholes: Armholes give you freedom of movement Fit: Classic fit, hip length