Lululemon Key to Balance Tank Black (First Release) Style Number: W1CLLS Original Price: $58 Material: Nulu Designed for: Yoga Light support: Intended to provide light support for a B/C cup Lycra®: Added Lycra® fibre for shape retention Built-in bra: Built-in bra gives you added support and coverage Coverage: Pockets for optional, removable cups Back opening : Keyhole in the back to help keep cool Tight fit: Tight fit, cropped length