US Patent 10350474 Underwater striking bag device and method of using the same

An underwater striking bag device includes a bag having an annular upper compartment disposed in an upper section of the bag and receiving air therein, a neck extending through the upper section and communicating with a lower compartment receiving water therein, a weight in the bottom section, a removable cap connected to the neck, an air valve connected to the annular upper compartment to provide for filling air into the annular upper compartment, at least one handle connected to the bag for assisting in filling and removal of water into the lower compartment as well as exercising by grabbing the handles and pushing, pulling, and lifting the bag during a workout.