90% Polyester + 10% SpandexTRENDY DESIGN- Crisscross back design and open tied back ensure ventilation and flexibility as well as increase the fashion sexy style. Open back design shows a pop of your favorite bra, offering you a awesome vision and cool feeling.SUPER SOFT & COMFORTABLE- The Polyester and Spandex blend ensures that our women's activewears are soft and own a silky and buttery touch that's like your second skin. Loose fit and super skin friendly fabric give you a gentle and soft coverage.SWEAT-WICKING- Scoop neck line and cutout back with breathable fabric pull moisture away quickly from the skin. For wearers, it gives a cool and fresh feeling without worrying that the cloth will stick to the sweaty body, maximizing comfort during physical activities.LIGHTWEIGHT & STRETCHY- Using professional sports fabric, our yoga tank tops are lightweight and stretchy, allow a full range of motions and give you a long-lasting comfort. Perfect for Yoga, Pilates, Dancing, Running, Cyclying, Fitness and Daily Athleisure.SLEEVELESS OVERALL- Sleevess tank tops offer extra ventilation and freedom of movement, keep you cool and give you a feeling of secure and covergae.NOTICE: The workout BRAS in the pictures are NOT INCLUDED in the package. You can click in our shop and find a sports bra you like to match this tank top.Size Chart (INCH)XS Chest 28-31 /Front Length 22.4S Chest 30-33 /Front Length 22.8M Chest 33-36 /Front Length 23.6L Chest 35-38 /Front Length 24If you have any question or concern, please contact us and we will be more than happy to help.