Senshi Japan Punch Bag Filling Weights, Convert Your Punch Bag Into a Heavy Bag, Sand Bag Filler Weights

Holds 50-165 Lbs: Use this sandbag weight for everything from kettlebell reps to strongman events.
Leakproof: Thanks to its patent-pending roll-down design, your fitness sandbag won’t leak sand.
Super Strong: Made of extra-tough 1000D nylon, your strongman sandbag will stand up to tons of wear.