Polyex liner is ideal for all low budget applications, can be reversed for a brown or black finish for the bottom of your pond. Made from strong materials for a durable and long life. Polyex pond liners are flexible, strong and durable with a strength enhancing stabilized and rot resistant coating on each side of the pond liner. Comes with a 25 year guarantee against faulty manufacturing when installed with Permalay or Polyfibrelay underlay. FISH SAFE