Self: 68% nylon 32 elastaneContrast: 87% nylon 13% elastane. Hand wash cold. Underwire cups. Adjustable shoulder straps. Sheer mesh fabric. Adjustable back hook and eye closure. CKUD-WI127. QF1712. One of the most recognizable designer names in the world, Calvin Klein exudes signature sensuality and sexuality through classic styles and minimalist designs.