Senshi Japan Punch Bag Filling Weights, Convert Your Punch Bag Into a Heavy Bag, Sand Bag Filler Weights (1 KG)

The convenient way of transforming your standard punch bag into a heavy bag. Simply add our heavy bag weights to your punch bag's filling and zip it back up. In a matter of seconds you'll have a heavy bag without the need of emptying and refilling your punch bag with heavier filling and risking damaging your punch bag.