Calvin Klein's polyester-blend sports jacket combines breathable construction with a relaxed hooded silhouette for modern athleisure appeal. Crafted from 86% polyester and 14% elastane, the lightweight fabric offers inherent stretch and moisture-management properties ideal for active wear. Ribbed cuffs and hem provide structure, while the full zip front ensures easy layering. The jacket's versatile blue tone and streamlined cut make it equally suited to casual outings or gym sessions.