The Flex Open Back Tank Top is the perfect addition to your workout attire. Designed to keep you cool and comfortable it is ideal for wearing over your Superdry sports bras. Sleeveless design, Open back, Iconic logo on the left side seam, Breathable fabric - Allows air and moisture to pass through the material to help keep you comfortable, Moisture-wicking - Helps to regulate your body temperature by drawing perspiration away from the body and allowing moisture to disperse from the outer face of the fabric.