A soft and supportive women's racerback bra made with merino wool jersey corespun fabric, the Sprite Racerback Bra features improved cup shaping and an open back design that improves freedom of movement. Our highly breathable corespun fabric uses nylon fibers wrapped in merino wool for added strength and durability that maintains next-to-skin softness, and we added a power mesh lining to improve moisture management and comfort. The no-side-seam design prevents underarm chafing when you're on the move. 83% Merino Wool, 12% Nylon, 5% LYCRA® corespun Comfort, support, Breathable, Odor Resistant, style, Durable Updated with improved fit, single back strap allows for extreme range of motion, new cup construction for enhanced fit and support, no side seam prevents underarm chafing, corespun fabric for added durability