This is a two-wheeled wheelchair for small dogs. Size (approx.): 45cm long x 5.5cm (inner diameter) / 9cm (outer diameter) wide x 24.5cm high Please note that there may be some errors as this is a rough measurement. It was made by a workshop (Sweepie) and used for about a year. The main body and tires have scratches and other damage. The belt also has some dirt and fading, and there are marks from where a pen was used (photos 8 and 9). There are notes written in the instruction manual. Please understand that there may be oversights as this is a personal inspection. Please refrain from purchasing if you are looking for a perfect, unused item. If you have any concerns about the condition of the product, please comment before purchasing. Please purchase with the understanding that this is a used, aged item that has been stored at home.