The Calvin Klein Women's Modern Cotton Bralette is a top-rated racerback bra on Amazon. It features a comfortable and stylish design, making it a popular choice among women. The bralette is made from a blend of cotton and modal, providing a soft and breathable feel. It has a racerback design that offers excellent support and freedom of movement. The bralette also has a wide elastic band with the iconic Calvin Klein logo, adding a touch of style. With its high ratings and positive reviews, this racerback bra is a must-have for women looking for comfort and style.