MMA - Mixed Martial Arts Iron Fist Iron Palm Heavy Duty Zippered Canvas Training Bag Filled with Over 18 Pounds of Iron Ore Pellets Create Hands Like Jackhammers !!!!! Made in USA Canvas bags are 13" x 10" and made of heavy duty material made and are made to last Strong heavy duty nylon zippers run the full length of the bag. Easy access to add or remove iron ore pellets for impact selections Bag colors may vary depending on stock. Each unit comes with over 18 pounds of heavy iron ore pellets This training bag will take your hard hits while building strength and stamina