Several years ago I purchased a water storage bag that had the word BACKPACKER across the front of it. The outside of the bag was canvas with a plastic bladder encased inside. This gad had a single loop handle for carrying and on the outside bottom right was an outlet that had a rubber plug that enabled one to let water out of the bag by simply lifting the extruding tab. It is a great camp bag and I have used it for many years. Does anyone know if this bag is still available and if it is, where can it be purchased? Thanks!