In the past few years, we have covered plenty of heavybags for serious boxing & MMA training. The Innolife Boxing Dodge Bag is designed to improve your reaction and dodging skills. It is made with PU leather and can be filled with steel balls.
More gadgets like this: here
This boxing bag is ideal for pendulum training. It weighs 2.5lb when filled. You can find out more about it here.
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