Sweet Mommy Maternity and Nursing Basic Rayon Long Sleeve Top Rayon(Bamboo fiber)95%, Polyurethane5% Affordable Soft Comfy MATERNITY and NURSING Top. BUST Measurements in INCHes: SIZE S 31, SIZE M 33, SIZE L 34, SIZE XL 36. BUST Measurements in CM: SIZE S 80, SIZE M 84, SIZE L 88, SIZE XL93. Plenty of belly room, very stretchy. Easy access to discreet nursing. Feels heavenly soft on your and your baby's skin.