From Cake: 

Knitted from a dense yet super soft yarn, this seamless nursing bra provides comfort, support and functionality without restriction. Ideal for light-medium activity such as yoga or walking, you’ll never want to take this cozy maternity bra off. The ultra-comfy stretch fabric grows with you during pregnancy, and snaps back to its original shape postpartum. 

Ideal for sensitive growing breasts during the first trimester of pregnancy, 0-4 weeks post birth, nursing or even after.