Wear this tank two ways: layer it on long and loose or tie up the back to secure in place during yoga class. Fabric is four-way stretch, sweat-wicking, and quick-dry four-way stretch sweat-wicking quick-dry features Designed for: Yoga Anti-stink technology: No-Stink Zinc (zinc pyrithion) stops the growth of odour-causing bacteria on the fabric Neck coverage : High neck design adds coverage Breathability: Open back provides ventilation Move freely: Deep armholes increase the freedom to move Excellent used condition Smoke free Fast shipping