Atum women’s top tanks are essential and comfy for sports activities such as yoga, running, and fitness classes. Size &fit: Regular fit and length. Models sizes: XS and S. Product Features: Moisture wicking. Anti-bacterial. Extremely flexible. Easy to wear and clean. Quick dry. Washing Instructions: Wash inside out. Wash with like colors. Do not use fabric softeners. Remove promptly after washing. Wash at a temperature of 30º.