My original model, or at least something like the model Sörby first looked like. The top cover, which can be raised or lowered with two ingenious push buttons, has an internal pocket to store, for example, a wallet or telephone. This model is, as the title suggests, colored with onion skins.
The fabric is waxed with a mixture of beeswax and stearin. It seals and secures the bag, but note that the wax melts at just over 50 degrees Celsius. It does not run off the fabric, but things you have in your bag can soak it up. So do not leave the bag in a hot car, on an element, in the sauna, the oven and so on.