Develop total body strength, stability and endurance by training with the Super Sandbag. This versatile training tool allows you to execute countless training exercises, working your upper and lower body. Develop explosive power on-demand. The removeable weight bags can be used as soft weights to increase the intensity of any drill or exercise. Features durable outer shells for long lasting use. Zipper enclosure with velcro reinforcement. Includes Super Sand Bag, four (4) 10lb. weight bags. Filler not included.