Pondmaster Super-Flex is a flexible polyethylene-based pond liner that combines the strength of Polyethylene liners with the highest flexibility available. This 8.3’x8′ liner is fish-safe and is ideal for small to medium sized koi ponds, aquatice habitats, water gardens, and waterfalls. This liner is insect resistant, making it perfect for residential and commercial applications. Super-Flex is half the weight of traditional EPDM liners but more flexible.