This maternity & nursing top is sized to be used during pregnancy and throughout nursing.
Nursing opening style is
Fabric content: 92% polyester, 8% spandex lux jersey;
Wash instructions: machine wash cold, delicate cycle, lay flat to dry
*Measure the fullest part of your bust and hips. If your measurements fall in between two sizes, order the larger size to allow for shrinkage and room to grow for mom and baby.