The double-knitted fabric provides strong support from the lower abdomen to the underbust. The 3D knitted fabric around the buttocks supports a beautiful line without flattening the roundness of the buttocks. In addition, the 4 support bones on the belly and back prevent the bra from slipping down or curling up, so it's stress-free! The crotch is made of a cotton blend material that is gentle on the skin, so it can be worn alone.