Hamsters are energetic animals. As long as they have enough vigor, they will keep moving no matter what the day or night.Do you want your hamster or small pets have more fun? The ball Made with pet safe materials.Relieves boredom and increases activity level and giving him a fun spot to play. The ball is easy to install and a good toy for the hamster entertain. Such a good toy for your small pet, just bring it home. Feature? 1, light weight, easy to carry?quiet and silent 2, made of plastic, tear resistant, bite resistant, strong, non-toxic, durable. 3, suitable for pets to exercise, keep them healthy 4. This toy can train the natural instinct of hamsters to keep your hamsters agile. 5?Easy to assemble, with or without brackets, flashing can be selected, hamsters will like more models 6, easy to clean Description? [product name] hamster crystal running ball [product material] plastic [product size] S: 12.5cm/4.92 inch(You can choose the one with flash if you like?.M:14cm/5.52 inch.L:15cm / 6 inch(You can choose the one with flash if you like?. XL:16cm/6.3 inch [product color] pink, blue, orange?white?green How to use the running ball: a. On the indoor and outdoor flat floor, put the SS into the running ball, cover the cover, and place it on the ground to use. Make sure the SS is within the owner's line of sight. (1)If the pet is used for the first time, it will not run. It is recommended that you do not need to worry. You can leave the SS in the running ball for 1-2 hours, let the SS familiar, remember not to be reluctant, or it will aggravate the fear. After familiar with the toy, SS will gradually learn to avoid obstacles when he runs on the ground. (2) Installation method of the cover at both ends of the running ball: The cover is designed with a dark buckle. When the installation is performed, the position of the buckle of the cover