Description of The North Face Dyna Sports Bra - Women's The Dyna Sports Bra is the ultimate activity sports bra that features VaporWick™ fabric and mesh panels to keep you comfortably dry. Features: Shell Fabric : [Shell A] 93% polyester, 7% elastane Hyperknit stretch jersey; [Shell B] 100% polyester Flight Series™ - This athlete-tested performance collection is designed for done-in-a-day and weekend adventures when fast and light packing is paramo VaporWick™ is a proprietary fabric of The North Face® that moves moisture and sweat away from the skin to the outer surface of the fabric. VaporWick™ fabric Racer straps Mesh panels for increased breathability Built-in supportive bra Front hide-away key pocket Reflective piping and The North Face® logo