Have this pot already Ca. 2 Years used very often. Mostly the remains of lunch on the job to do it again warm. Before I bought it, several videos were viewed on YouTube with various pots. I wanted to give me an idea of the various forms of cover. This had the following reason. The shape of the lid rim and the closure clip, you can make the pot using a glasses rubber for jars 100 percent waterproof (tested by me). Although it is not so easy to get the glasses rubber over the top and you have to put the lid exactly but all is not rocket science and it works just fine. So want to have a robust pot for all the you can do also waterproof, buy. Incidentally, I have the largest model and would buy it again.