Calvin Klein Underwear Modern Cotton Bralette in Gray. - size S (also in ) Calvin Klein Underwear Modern Cotton Bralette in Gray. - size S (also in ) 93% modal 5% elastane 2% poly. Stretch fit. Contrast logo band. CKUD-WI141. QF4111. One of the most recognizable designer names in the world, Calvin Klein exudes signature sensuality and sexuality through classic styles and minimalist designs.