The Fight Monkey 75 lbs. Commercial MMA Heavy Bag is hydraulically filled with shredded dense fibers:
No Sand or alternate weights used - ONLY fibers. This ensures a more even striking surface, and equal density throughout the entire bag.
Commercial Canvas Lining: This Commercial Fight Monkey Bag Lining is over 2mm thick, (versus Standard Heavy Bag lining which is 1/2 mm thick) making this bag much more durable and resistant to ripping.