Traditionally, liner kits have presented many difficulties for the beginner pond gardener. Since every liner pond shape is different, pond gardeners must customize their own pond, ensure that it is level, and ensure that it does not have excessive wrinkling. A flexible preformed pond, on the other hand, is easy to install. The flexible preformed shell already has a pre-defined shape, yet it is easily transportable, since a typical folding kit comes in a box that can fit into your car truck (I.e. it is one-sixth the size of a regular preformed kit). Thus, installation involves merely removing the pond from the kit, unfolding it, digging a hole, and inserting the pond shell into the hole.

One common complaint of customers in the past has been that flexible pond shells have been difficult to unfold. To address this problem, as of January 2006, Algreen Products has introduced a new line of flexible preformed pond kits which are manufactured from a novel blend of rubber, nylon, and plastic. Using the new rubber-based composite, Algreen