How to Build Your Own Sand Bag in 30 Minutes | Nerd Fitness
The laundry bag/contractor bags/pea gravel set-up is far from the only way to make your own sandbag. For the exterior bag, especially if you want to make a sandbag that weighs over 50 lbs, consider using a heavy duty military-grade duffel bag. For the interior bags, heavy duty zip lock freezer bags reinforced with duct tape can be used. Another ...