Transparent DesignThe small wheel shows translucent design, visually spacious and bright. You can easily see your pet playing inside. The years of durability and rotation stability. And the circular edge set makes it safer and more stable. Easy to use and install. The bracketless impeller can be mounted on a wire cage or an acrylic cage for easy installation. Smooth and mute Aerodynamic design reduces the Wind resistance and allows the wheels to rotate more smoothly. The edge of the cylinder is polished. Smooth edges that wont hurt pets feet. The bearing has good mute performance and is durable. Easy to cleanFull body washable, keep wheel clean, increase pet exercise frequency to keep healthy. Strengthen pet exercise, pet play, to relieve boredom. Material SafetyMade of high quality material, non-toxic and tasteless, can serve for a long time. It is healthy and harmless to your pets. An ideal place for your little friends, safe and warm for them to sleep or play.