BAOMOSI Women's Seamless High Impact Support Racerback Workout Yoga Sports Bra 90% Nylon + 10% Spandex Imported Pull On closure internal bra knit with restricted stretch underbust and side bust panels Encapsulation and compression support (internal and external knitted structure support each breast individually as well as offer compression) double layer knitted construction for maximum support and shaping Active Workout Women's Seamless Fit Stretchable Fitness Sports Bra / This is breathable Sport Bra that is Suitable for Any Active Fitness Activities /Lightweight Material for Better Active Fitness Experience front yoke knit with high modulus power stitches to reduce breast movement Racerback style offers wide range of arm movement and non slip straps