Aerators with hard bag

Hard bag

— sacks in the form of rigid containers, usually plastic. The main advantage of such bags, in comparison with soft ones, can be called high strength and the ability to easily endure contact with sharp objects (for example, knotty branches). In addition, it is somewhat easier to turn over a rigid container when unloading. On the other hand, such bags are more bulky, and without a special indicator (see the relevant paragraph), it is rather inconvenient to monitor their filling.