Lululemon Free To Be Serene Bra Copper Coil Like new no flaws at all Size: 6 Rare color Feel free to be fully in the moment as you flow through your practice in this lightweight sports bra. We designed it with a skinny underband for unrestricted movement and maximum comfort on—and off—the mat. The strappy open back gives your shoulders full range of movement and helps keep you cool, while the technical fabric wicks away sweat.