Thanks to the elastic inner waistband, the K-Swiss Heritage Tracksuit Pants offer the perfect fit. The deep pockets make it possible to keep tennis balls close at hand without them getting in the way while playing. The Heritage collection goes back to basics. The classic three-color combination refers to the origin of the brand and tennis tradition in the United States. The K-Swiss logo also features the signature Brunner Blue color, named after the founders of K-Swiss, brothers Art and Ernie Brunner, and corresponds to the legendary color blue of most competitive tennis court surfaces in the United States.