This 40 inch cat exercise wheel provides the ultimate indoor cat exercise solution for active felines who need a healthy outlet for their energy. The spacious running track accommodates cats of most sizes, and the carpeted surface ensures comfortable footing with every stride. A built-in lock lets you secure the wheel when not in use or during rest periods. The natural wood frame adds an elegant look that complements your home decor while delivering rock-solid stability during high-speed runs. Quiet precision bearings mean your cat can enjoy a cat treadmill workout any time without noise. Easy to assemble with included tools and instructions, this wheel is an excellent investment in your indoor cat's physical and mental wellbeing.