Part is that it becomes a holder for brushes while you are working or needs to dry or just as a carry bag There are holes in the top case to allow brushes to breathe well and dry, is important for To protect and organize brushes when going out or working, a must for painters, artists, even pencils. Brush holder can hold 10 or more brushes with short handles (length: 4 to 10 inches), external closed size: 11 x 5.2 inches This case is made of good quality materials and is very durable