XITAO 63Gal Water Storage Bladder

https://youtu.be/gTWwayJONzc

63Gal/240L Water Storage Bladder w/Water Level Indicator, Large Capacity Foldable Water Storage Containers, Portable Emergency Water Tank Water Bag for RVs, Fire Prevention, Irrigation (Amazon Affiliate)
US: https://amzn.to/444LIni