Trunks by Calvin Klein Made from stretch cotton rich fabric. Elasticated waistband. Standard hem. Regular fit. ABOUT CALVIN KLEIN. With a rich company history spanning back to 1968, Calvin Klein originally started life as a coat store in New York City. The now iconic label, famed for their minimalist approach, offers up covetable diffusion lines CK by Calvin Klein and Calvin Klein Jeans , both of which channel the label''s inimitable style.