Betta PVC Pond Liners are perfect for building small and medium sized ponds. They are available in a range of pre-cut sizes, from 2m x 1m to 8m x 8m. Betta PVC Pond Liners are made from high-quality materials which makes them tough, flexible, and easy to install. They are highly resistant to UV, frost, and root penetration. These liners are 0.5mm thick and carry a 25-year guarantee.