Transparent DesignThe small wheel features a translucent design, which is visually spacious and bright. You can easily see your pet playing inside. Years of durability and rotational stability. And the circular edge set makes it more secure and stable. Easy to use and install. The bracketless wheel can be mounted on a metal cage or an acrylic cage for easy installation. Smooth and quiet The Aerodynamic design reduces wind resistance and allows the wheels to turn more easily. The edge of the cylinder is polished. Smooth edges that do not hurt pets' feet. The bearing has good quiet performance and is durable. Easy to cleanWhole body washable, keep the wheel clean, increase the frequency of pet exercise to keep healthy. Strengthen pet exercise, pet games, relieve boredom. Safety of materialsMade of high quality material, non-toxic and tasteless, can serve for a long time . It is healthy and harmless to your pets. A great place for your little friends, safe and warm for them to sleep or play.