Material. Cup / Crotch: 100% Pure Silk. Body Fabric: Silk-Cotton Blend (78% Organic Pima Cotton, 22% Silk). Details. Incredibly soft Pima cotton and pure silk fabric, highly breathable. Supportive wireless bra in cup sizes. Maximum full coverage. Non-wired full cup bra shape for maximum wireless support. With Pockets. With Removable Cotton Paddings