Poly,Cotton Pull On closure Machine Wash MATERILA: 4.4-ounce, 50/50 cotton/poly.Fabric Weight: 4.3 oz (lightweight).Super soft and lightweight. BASICS & SPORTS: This material of tank top helps you stay cool on the hottest days. The sleeveless tank is made with built-in ventilation that allows heat and moisture to evaporate. Perfect for the gym or other place for exercise. Special Design : The tank top not just a vest.It represents a life attitude. The unparalleled design and comfortable fabrics represent our comfortable and free lifestyle.Choose it to represent yourself. GOOD EXPERIENCE : A comfortable running tank top makes it easier to work out every day. This women's tank top has a racer-back design for full range of motion and is finished with an special logo on the chest. Support: Lifetime Support Provided,if you have any questions before or after your purchase, please feel free to contact us.