thick knit ribbed stretchy I'm 32DD natural and this fit well I wore once I'm 30 inches under bust ************** please bundle with more items from my closet to save on shipping. I offer good discounts on multiple item bundles. posh ambassador II fast shipper smoke free home top rated seller use code Tr3ndykay to get $10 off your first Poshmark order from ANY closet please keep in mind that Poshmark keeps 20% and any shipping discounts come out of my profit. thanks