Plastimo Flexible Water TanksDrinkable Water Flexible, light and form fitting, and can therefore be installed where rigid tanks cannot be. Flexible, light and form fitting, and can therefore be installed where rigid tanks cannot be, due to shape of boat or difficult access. Easy maintenance double envelope allows inner chamber to be easily removed from outer envelope for cleaning and examination. Consists of a welded non porous tasteless PVC water chamber (inner bladder) inside a