1Pc Pet Rodent Mice Jogging Hamster Gerbil Rat Play Plastic Exercise Ball Toys 100% brand new and high quality Material: Plastic Color: Random delivery Size:Diameter: Approx.8cm/3.15 Quantity:1Pc Package Included: 1Pc x Pet Exercise Ball Features: 1. Doors unlock by twisting anti-clockwise. 2. Provides hours of active fun for your small animal. 3. Ideal for hamsters gerbils mice or other small animal. 4. 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. 5. This product is designed to screw-fix together which makes it stronger then conventional play balls and is suitable for Hamsters and other small animal