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 features Designed for: Yoga Lycra®: Added Lycra® fibre for shape retention Neck coverage : High neck design adds coverage Breathability: Open back provides ventilation Roomy armholes: Armholes give you freedom of movement EUC