Material. Cup / Crotch: 100% Pure Silk. Body Fabric: Silk-Cotton Blend (78% Organic Pima Cotton, 22% Silk). Details. Elegant look with matching bras and brilliant coverage.. Pure Silk inner crotch absorbs and perspires moisture, is antibacterial, and provides the best feminine hygiene care.. Soft Pima cotton, washable, and easy to dry. Feel the smoothness when touching your sensitive part.