Receive your Empty Boxing Bag Freight Free! When filled, it approximates a weight of 50 kilograms. It's crafted from Extra Heavy Duty, Laminated Ripstop Tarpaulin with reinforced stitching and a zipped lid. Refilling with rag fill is a breeze. It's AAA Grade, commercially rated and comes with a 2 year extended manufacturer warranty. Heavy-duty support hooks and a tie-down point ensure additional stability.