Super-strong pond liner sized 5m by 4.5m (16’5″ x 14’9″). This flexible liner can be used to make many different shaped ponds – for example a rectangular pond sized 2.5m x 2.0m x 0.5m (8’2″ x 6’6″ x 1’8″). The PondXpert Flexiliner is the UK’s bestselling brand of pond liner. These liners have been used in over 100,000 ponds internationally and will not let you down.