Lululemon Key to Balance Tank Top Diamond Dye Lunar Rock True Navy in Size 12. This is in good used condition, with some light pulling, but no major flaws to note. Through every bend and stretch, find the balance you seek and the coverage you need in this high-neck yoga tank, powered by Nulu™ fabric. nulu™ Lightweight, buttery-soft Nulu™ fabric wicks sweat and is four-way stretch buttery-soft handfeel lightweight sweat-wicking four-way stretch features 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