This is an air filled vinyl pouch that when immersed in a pool it offers a resistance force that can strengthen the arms and upper body. This category of products has four models where the resistance force varies between 3 and 10 pounds. There is a convenient fill valve, and the product is light and east to travel with. Low shipping cost.
914800 - 3lbs of Resistance914801 - 4lbs of Resistance914802 - 8lbs of Resistance914803 - 10lbs of Resistance