HART Aqua BagTarget your whole body at once with the HART Aqua Bag. This specially designed PVC weight bag can be filled with water which creates movement within the ball, causing you to work your core and stabilising muscles twice as hard while increasing your workload at the same time. Its soft neoprene handles allow you to perform any range of exercises making this ball the ultimate training tool at the gym or at home. Designed with a dual valve for air or