This is a simple bin that perfectly fits an Amazon Basics Standard dog poop bag. There is a holder inside the bin for the roll of dog bags to have these on hand when needing to change out the bag. Holes are cut out in the corners for the purpose of keeping a rubber band in place around the top of the bag to keep it in place. Works great for in the bathroom, kitchen, or in the car. Recommend printing in PETG, especially if used in the car to minimize chances of warping in the heat.