Material. Cup / Crotch: 100% Pure Silk. Body Fabric: Silk-Cotton Blend (78% Organic Pima Cotton, 22% Silk). Details. Luxuriously crafted in breathable Pima Cotton and lined in silk, this sumptuously soft bra is designed to give an exquisite fit and incredible comfort. Non-metallic back fastenings and bra adjusters. Full cup bra shape for maximum support. Non-metallic underwire that won't dig into your skin. With Pockets. With Removable Cotton Paddings