A good pond liner is the basis for every beautiful water garden. Little Giant PVC Pond Liners are made from a strong, 20 mil flexible PVC material that allows for customization of size and shape. The Little Giant PVC Pond Liner is durable and strong but also lightweight and easy to maneuver. These PVC pond liners are embossed to promote the growth of beneficial bacteria in your pond or water garden. Ltlle Giant PVC Pond Liners are backed by a twenty year warranty.