At less than 1.0 denier, Microfibers are finer than luxury natural fibers such as silk, yet strong and uniform. The close packing of the fine filaments of Microfiber are able to lock out water without chemical treatments or coatings, yet allow passage of moisture vapor, leaving the wearer dry and comfortable. These garments are therefore much lighter and more breathable than those made from conventional fibers. - This comfortable bra top is suitable for Yoga or any athletic activity or just lounging around. Nylon/Spandex provides fabrics and garments with great fit and freedom of movement. With double fabric front, this sexy bra top is light weight, versatile, and great for layering. 85% Polymide (NYLON) and 15% Spandex (LYCRA®) Available in 3 sizes: S, M, and L.