Neo was developed with the objective of designing a large, durable water tank with beneficial built-in properties. With its basic geometry of a cylinder, the flat rainwater tank offers high stability. In addition, less material is required as, due to the tank’s bagel-shaped contour, front sides are no longer necessary. The thickness of its walls could be reduced as well as a result of optimised statics. The rainwater tank is easy to install and only takes up a small amount of space in the ground of the garden.