Support healthy daily activity with the Comfort Wheel. This exercise wheel has a safe, solid running surface and a tail-safe design that helps pets run comfortably while reducing the risk of injury. Every wheel includes a heavy-duty wire stand and a 2-way attachment clip so it can be used free-standing or attached securely to any wire cage. Available in multiple sizes to fit a range of small animals, the Comfort Wheel encourages natural movement and active play.