I accidentally purchased the wrong quantity on Rakuten, so I am listing the excess items for sale. Quoted from the purchase page below. ↓↓↓↓↓ A wheel cover that prevents dirt from your suitcase from being brought indoors! Made with elastic and resilient silicone material. The cover wraps around the wheels to protect the casters. By taking on scratches and dirt, it extends the life of the wheels and allows you to use your suitcase for longer! Furthermore, it not only protects the wheels, but also has a noise reduction effect! By absorbing shock, it cuts down on the noise that can be bothersome when moving!