Calvin Klein, a renowned American fashion brand founded in 1968. Simplicity and a casual-chic style is the core of the Calvin Klein brand. The brand's first perfume, Calvin, was inspired by the clean, crisp scent of soap. It was designed to be a unisex scent and was an instant success. This led to the launch of several other successful perfumes, including CK One, Eternity, and Obsession. Calvin Klein fragrances are known for their sophisticated scents and sleek packaging that appeal to both men and women.