EUC Size 34D adjustable sizing on the back with clips Running never felt so good—we designed this revolutionary bra to give you comfort, movement management, and a natural shape. Ultralu™ fabric is soft, smooth and powerfully supportive. Ultralu™ Ultralu™ fabric is soft, smooth and powerfully supportive soft smooth powerfully supportive Features Designed for: Run Built-in cups: Lightweight, breathable built-in cups are engineered to soften bounce Lycra®: Added Lycra® fibre for stretch and shape retention No-distraction underband: Bonded underband won't constrict, dig in, or ride up Back closure: Makes taking it off a breeze Flat closure: Stitch-free hook-and-eye closure lies flat for a distraction-free fit