The four-piece convenient storage combination can organize office supplies and household items as you like. The material is light and strong; therefore, it is also suitable for outdoor fishing and camping. All sizes can be combined in the largest size container when not in use, saving unnecessary space waste and stacking. Whether to classify items according to sizes or use it freely with other storage container series, it can easily create storage richness and diversity. It is a perfect one for making the desk and indoor space clean and beautiful.