Calvin Klein Sheer Marquisette Unlined Demi Underwire Bra (QF1680). The Calvin Klein Sheer Marquisette Unlined Demi Underwire Bra QF1680 has stretchy, see-through, seamless molded cups for a perfect, comfortable fit for each breast. Calvin Klein's Sheer Marquisette Unlined Demi Underwire Bra is made of nylon/elastane.