Suit trousers by Calvin Klein, For that thing you have to go to, Belt loops, Concealed fly, Side pockets and two back pockets, Regular fit, Just select your usual size. 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.