MaxxMMA Double End Heavy Bag Anchor (Unfilled), Adjustable Weighted, Sandbag for Fitness, Portable Weight Training Bag, Core Training Tool

Versatile Equipment: Designed with handles for multi-purpose workouts, while also minimizing heavy bag swing and securely anchoring double-end balls in seconds. How to fill: You can fill it with sand or bottled water, the bag is not watertight. Please do not fill water directly into the bag. Eliminate Leakage: Extra Hook and loop fastener flap over zipper for additional reinforcement. Accessory Support for MaxxMMA Product: Provide extra weight for MaxxMMA's Reflex Bag Kit and Double End Bag Kit. Maximum weight of 33 lbs. Portability for on-the-go training.