Well, what to say... 55 kg withstands with 2.5 liters of water. The lock is made of fragile plastic, I do not like it, but it will come out and this. This is a product with a smell. I understand that the smell will go away, but it is better to take something more nominal and expensive, if health is important. As a result, I will take something from famous brands. This one will come in handy. In general, the hydrator seems OK. I put 3 stars because the smell is not said in the description, Yes stupid, but I do not care. Such things I think can not be sold as food products.