LSD Hot New Cute Plastic Pet Rodent Mice Gerbil Rat Hamster Jogging Playing Exercise Running Ball Toy Randomly Color 100% Brand New and High Quality; Doors unlock by twisting anti-clockwise.Provides hours of active fun for your small animal.Ideal for hamsters, gerbils, mice, or other small animals. This ball allows the Hamster to mix play and exercise, making it more enjoyable for the Hamster and more motivated to keep in good shape. This product is designed to screw-fix together which makes it stronger then conventional play balls and is suitable for Hamsters, and other small animals. Material: Plastic.Diameter: 9.5cm / 3.70 inch.Color: as pictures show(we will send to you randomly)