Calvin Klein Ls Sweatshirt. Elevate your style with this stylish sweatshirt by Calvin Klein. Its' round neckline, the comfort fit and the rubber on the sleeves and the bottom, make it super comfy for your workouts or αt home. The logo of the brand completes its' style and you can match it with your favorite pair of joggers. Composition: 57 % cotton,38 % polyester,5 % elastane.