This is an unnecessary triangular corner, just a drain bag that you spread out in the sink. I received a pack of 50, and after using it a few times, there are 44 remaining. The outer packaging is torn. Please consider this item, understanding that it has been stored at home and inspected by a non-professional, so there may be small stains, etc. Please also note that the color may differ slightly depending on the photo. It will be packed compactly, and may be sent with simple packaging and compressed. Please understand that there may be creases from storage or shipping. These are the flat measurements. Please note that there may be slight errors due to amateur measurements. #DrainNet #FoodWasteDisposal #KitchenSupplies