2 Pcs Hamster Running Balls Small Animal Exercise Balls Transparent Hamster Balls For Relieves Boredom And Increases Activity [High -quality materials]: Our hamster wheel is made of high -quality environmental protection plastics and can be used for a long time. There are multiple ventilation holes, safe and breathable, which can relieve boring and protect pet health [Unique design]: The transparent design allows you to be clearly visible when training hamsters. You can play with pets and increase the fun of interacting with pets [Easy to install]: The sphere is designed with a lock design. All you have to do is to buckle the two hemispheres and lids in place, and gently press to form. The installation is simple [toys]: Plastic jogging balls provide a fun place for hamsters and mice at home. Very suitable for small animals such as hamsters, tazar, mice Color: pink+orange Size: about 12CM in diameter Delivery quantity: 2 pieces Warm prompt: 1. As different measuring methods, it will occur 1-3 cm deviation about the items, please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products.