I ordered a combat sports unfilled banana bag, because shipping on a filled bag was rediculous. But I have never filled my own punching bag before. I have read many things but I am not sure what the best thing would be. What I was thinking of doing was making a cylinder from carpet padding to put around the outside edge. then filling up about 2 feet with tightly packed cut up sheets. Then putting 20-30 pounds of sand in a bag, surrounding it with cut up cloth. filling up to about 4 feet, and putting in another 20-30 pound bag of sand, and filling the rest with cloth. Hopefully i can find about 50-60 pounds of unwanted sheets and clothing. Has anyone ever filled a bag in a similar matter. If anyone has inexpensive recommendations, please let me know. Hopefully i can find about 50-60 pounds of unwanted sheets and clothing.