Flexible Liquid Storage Bladders or Pillow Water Tanks are a robust, lightweight and cost-effective solution for your liquid storage requirements. The Flexible Bladder Water Tanks are available in a range of materials to provide the appropriate resistance to a number of liquids and chemicals as well as being suitable for drinking water and wastewater applications. Our Collapsible Water Storage Tanks are a low cost water storage solution and available up to 100,000 litres capacity.