Lululemon Free To Be Bra (Wild) Black Size 6. Meet you at yoga? This strappy open-back bra is ready for all the ways you move, stretch, and open. luxtreme® Is sweat-wicking, four-way stretch, and engineered not to shrink features Designed for: Yoga Light support: Intended to provide light support for an A/B cup Lycra®: Added Lycra® fibre for shape retention Coverage: Pockets for optional, removable cups