Material: 75% nylon 25% spandex. Super soft material, light and seamless, this yoga bra offers maximum comfort for women. If you prefer a loose fit or have a fuller bust, we recommend choosing a size up or larger. It may feel a little tight when you first try it on, but the material will stretch to fit your girl. Seamless bras are lightweight and comfortable. Seamless bra: advanced heat-fusion bonding technology: no seams, expert technology to protect the skin from any pressure without leaving marks. Seam-free, wireless, wire-free overlay bras offer maximum comfort for women. Zero compression on the bust and no stretchy steel ring. Note: For maximum comfort, if you prefer a loose fit, we recommend that you choose one size up. It may feel a little tight when you first try it on, but with the stretchy fabric material, the seamless bra is light and comfortable. Please select from the size chart. Measurements may be inaccurate by 1-3 cm (0.9-1.19"). Maximum comfort in all areas: The support is ideal for use as a yoga bra, a non-stretch lounge bra, a sleep bra, an everyday bra or a post-surgical bra.