Sandbags are great for strength and endurance training. Looking for something that brings more instability to your routine? The Tidal Tank Adjustable Aqua Bag has you covered. The Tidal Tank can be filled with up to 45 pounds of water.
As the weight of water shifts from one side to other, more muscles in your body are activated. The Tidal Tank weighs 3 pounds when empty, measuring 2 by 5″ when folded up.