The PVC AquaLiner Pond Liner 1331166 from Ubbink is easy to handle and to form into the desired shape thanks to the flexible PVC it is made of. This adjustable pond liner is the best way to create a unique pond to your own specifications.
Loads more than in a shop, and without needing to navigate all the aisles
Whichever suits you best
Like Macgyver but online