Heavy duty construction and seam sealing, although the centerline seam on the bottom of the bladder looks like it may have had too much heat in one spot and melted it a bit more. It doesn't affect the operation of the bladder though. Both the top and lower taps are the same size; it would have been nice to have a larger port in the top for filling the bladder. The fittings, including the metal extension tube and valve, seem to be slightly different size, as if one was metric, and the other english. You will probably need a good amount of sealing tape to ensure tight-fitting joints to the valve. I haven't quite figured out what the four lift/carrying handles are really good for. This bladder, when full, is going to be around 850 lbs. My gut feeling is that this straps/handles won't carry that much weight; I don't think I want to try to confirm that feeling or not. I'll let someone else do that. So if you are camping or need portable fire protection, you can carry this in the bed of a pickup and take 100 gallons of water with you. Pair this up with a high-output 12 volt pump, and you should be ready for almost anything!
Kenneth P Adamek 
Chuck 
