Forget the mess and the trip to the hardware store. This 5kg Filler Bag comes pre-loaded and sealed, specifically designed to drop straight into your FITROX Sandbag so you can start training the moment it arrives.

Designed to handle the same “rugged and functional” punishment as our main bags, this filler is the key to a truly modular workout. It provides that essential shifting centre of mass that forces your stabilizer muscles to fire, making every lift, carry, and throw more effective than using traditional iron.