Unfortunately, her apparent neither from all other reviews even from the picture, whether that article also has a waist belt or not. On my inquiry before ordering the seller has confirmed to me that it exists. When I received the article, my surprise was great: On the back of the bag there is a compartment with a zip top, where you can bring out the two shoulder straps and hook it into rings below. A waist belt is missing. A Backpack without waist strap is absolutely meaningless. The main weight of a backpack should weigh on the midsection and are supported by the waist belt. Thus, the shoulders are largely relieved, and the weight is ergonomically & body gently distributed and can be carried around for hours.
Nevertheless, is not this error because of the inquiry before ordering now with me, I had to bear the shipping costs for returning - very unfair. Once again, kudos to Amazon for a goodwill solution. My poor product evaluation is based essentially on the lack of waist strap (despite inquiry) the non-existent flexibility seller.