Review on Polyform A-Series Marine Buoy by Daniel Delgado

I purchased this for use as a heavy bag. It works fantastic! Really comfortable to hit with gloves on. This is the A4 which is 20.5 inches x 27 inches. Weighs around 180lbs filled with water. I used a jet sweeper nozzle with a shutoff valve behind it to fill. A 4x4 secured by joist hangers and an inexpensive tire swing swivel. 220lb rated spring and a couple threaded 3/4" chain links. I also needed to buy a 3/4" anchor shackle to atatch the bag to the rest of the rig. This set up is very smooth and quiet for me. Going this route saved a lot of money over the aqua bag being marketed for boxing right now. Highly recommend.