prior to having a Cali we did buy a portable toilet from lidl for camping and that one was certainly a rebadged tretford. Unfortunately it was bigger than the 335 and looking at the capacity figures this one is too. The 335 waste and fresh tanks are 10 litres each. This one has 15 and 20 litre tanks so I think it is bigger. Shames because there was no noticiple difference in quality. It even came with the same tretford sample bottles.