Calvin Klein Underwear CK ID Cotton Bra in Gray. - size L (also in XS) Calvin Klein Underwear CK ID Cotton Bra in Gray. - size L (also in XS) Self: 65% cotton 30% metallic 5% elastaneLining: 92% cotton 8% elastaneTrim: 54% polyamide 28% poly 12% elastane 6% metallic. Hand wash cold. Stretch fit. Adjustable shoulder straps. Contrast logo band. CKUD-WI138. QF4275. One of the most recognizable designer names in the world, Calvin Klein exudes signature sensuality and sexuality through classic styles and minimalist designs.