High quality material The hamster running ball is made of high quality plastic material, which is lightweight and environmentally friendly, non-toxic, tasteless, wear-resistant and not easy to break, and can be used for a long time. long period. Transparent design The hamster ball is designed with transparent materials, so that you can clearly see the movement of the hamster in the ball, and you can play with your pet, thus increasing the fun to interact with your pet. Easy to use The hamster ball is very easy to use. You only need to open the cover once and rotate it left and right. Breathable The sphere adopts a porous design, which increases the friction in the ball, increases the air circulation and provides a comfortable and breathable environment, so that your little animal can play for a long time. Widely Used Using a hamster running ball can provide healthy and safe exercise for hamsters and prevent obesity. Suitable for small animals less than 12cm in diameter, widely used in hamsters, golden bears, mice, gerbils and other small animals. Features: -Plastic material, light, wear-resistant, strong and durable. -Easy to assemble and clean. -The transparent design allows you to see the hamster clearly as it moves. Color: Plastic Material: blue, green, white Size: Diameter: 12cm Quantity: 3 The package includes: Blue Hamster * 1 fitness ball Green Hamster * 1 fitness ball White hamster fitness ball * 1 Warm notice: 1.Please allow a little size error due to manual measurement. 2.Due to lighting effects and monitor's brightness / contrast settings etc, the color tone of the photo and the actual item may be showing slightly different.