Energy Zone Y2K Black Blue Running Shorts Size Small Black Energy Zone athletic running shorts with light blue contrast trim and mesh side inserts. Elastic waistband and lightweight 100% polyester construction. Size Small. Cute retro/Y2K sporty look—great for running, workouts, gym wear or casual athleisure. #Y2KActivewear #Sporty #Athleisure #GymShorts #RetroSportswear