Deep blue Racerback Wide chest band Nylon / Spandex Soft, stretchy - and yet still very compressive, the design has you covered. It starts with a wide, comfortable chest band and ample coverage at the sides and top for lots of different breast sizes. The outer layer of compression is complemented by an inner layer with cup capacity and encapsulation. When originally purchased, Oiselle donates one to the Bras for Girls Program, which serves middle school girls in need.