[【Easy to Install】Are you looking for a cat treadmill wheel that is suitable for your cat and has a simple installation? This Primachen Cat Runner Wheel is your best choice. No tools are required; the installation is straightforward and takes only 10 minutes. Say goodbye to the complicated installation! 【Suitable for All Cat Sizes】With an internal diameter of 31.5, our cat wheel accommodates cats of all sizes. It allows your cats to stretch and roam freely, enabling them to release their energy to the fullest. 【Get Your Kitties Moving】Most pet cats are overweight because of the long hours indoors and a lack of exercise. The Primachen cat treadmill provides an excellent way for your indoor cats to stay healthy. Your furry friend can exercise anywhere and anytime at home. 【Durable and Easy to Clean】Our cat treadmill exercise wheel features a detachable running mat, making it easy to clean or replace. The cat fitness wheel is made of eco-friendly PP material, so the cat treadmill is very durable. 【Please Note】Due to the product batch, our mats have now been replaced from green to gray.]