Introducing Calvin Klein's CK One Summer 2021, a unisex Eau de Toilette blending top notes of Watery Notes, Grapefruit, and Lemon for a breezy feel, Rhubarb, Watermelon, and Eucalyptus for a fruity-floral heart, and base notes of Peach, White Woods and Ambroxan for an exotic finish. Discover the perfect summer fragrance.