Coco*Store Pet Rodent Mice Jogging Hamster Gerbil Rat Play Small Plastic Toy Exercise Ball Doors unlock by twisting anti-clockwise. Provides hours of active fun for your small animal. Ideal for hamsters, gerbils, mice, or other small animals Material: Plastic Color: Send by random Diameter. : 9.5cm/3.74" Package included: 1 pcs X hamster Ball