The Ultra PRO Display Cube is sized to hold a regulation size Softball and includes a base ring to hold ball in place. The Display Cube can also hold most POP! Figurines and an endless variety of small collectibles and toys. Made with non-PVC, Supplies, ultra-clear and highly durable 3mm thick plastic walls, Supplies, the Display Cube is a great storage and organizational solution for just about anything around the house! Softball and other contents not included.