Double End Bag, constructed with top grade split leather. Triple nylon stitched with extra reinforced seams to last round after round. Steel Riveted Strap Loops. Using durable yet supple leather and a riveted steel loop design this speed bag will handle the most intimidating workouts. This Double End Bag, is not only durable but quick. Even though it is engineered for use in the gym, it's also great for your home gym.