Pillow Tanks What is a Pillow Tank?  Pillow tank also calls bladder tanks, flexible tanks.  It is used for termporary and long term liquid storage and transportation, like water(including drinking water), fuel, chemical liquid, etc.� With low profile, actually, the pillow tank, when it� 's� empty, it� 's� no height, when filled, it� 's� low profile.� Then the pillow bladder tank usually uses in some project sites with limited places. Why choose the pillow tank?� For liquid storage, there have 2 types optional: the rigid tanks and flexible tanks.� Then we should compare the difference between both tanks. COMPARISION(rigid and flexible) Above, the rigid tanks and flexible tanks are both for liquid storage and transportation, but when we choose it, we should consider the working condition.  Still no ideas on how to choose?  No worries, contact Flixtank to consult.